Just another attempt to deflect from a previous inept GM of ours (Palinka's attempt). Even if Howson had nothing to do with the hire (in which he should have just resigned or force them to fire him than put his name through the mud for a bad decision); there was still plenty to hold him accountable or "accountable" for.
Palinka was talking hiring process; let's not move beyond that into the actual tenure.
The hiring process at various levels of hockey normally involves the top hockey man piecing together a list of likely candidates, followed by he and his staff vetting them fairly extensively before contacting any of them in any manner. Depending on the level, somewhere in the range of 25-50% clearance makes it through to the actual contact part. Some are interested, some aren't under any conditions. That further pares the list.
Once the interviews begin, the people doing the interviewing will normally be the top hockey guy - ordinarily team president - and the GM, with the assistant GM in there depending on how duties are split. In the junior ranks, there's a lot of overlap, particularly with a good number of former players getting involved in ownership and also the front office. In the NHL, this doesn't happen. It's almost entirely the GM, assistant GM, and team president.
That's where the issues came in. With any team in the NHL, a team president is an experienced hockey executive who normally has extensive experience in multiple aspects of the game. With Columbus until this past year, the team president was an accountant whose only experience in sports was low-level college football over two decades ago. He's not the only inept person in recent memory to hold that title, as Kevin Lowe demonstrates on a daily basis in Edmonton. In junior hockey, there are way too many people whose checkbook and ego outpace their actual knowledge of the workings of hockey. The London Knights are a great example of what a very efficient and structured setup can look like, while the Kingston Frontenacs for the last 20 years are the complete opposite. But they have Doug Gilmour running the show now, and times are changing.
Now, you suggested that a worthwhile GM should resign rather than hire a coach who he's not sold on. I find this idea to be comically absurd. Is it true that Scott Arniel was not Scott Howson's first choice? Yes. Is it true that Scott Arniel was some afterthought that was basically pushed through by Mike Priest? No, Arniel was actually held in fairly high regard. If Columbus hadn't hired him, someone was going to in the very near future. I don't think that anyone could have predicted the unusual manner in which Arniel handled his first shot as an NHL head coach, particularly since he's a former NHL player. It's very possible that Arniel has looked in the mirror and realized that if he gets another chance, he can't do what he did in Columbus. It's also possible that he firmly believes that the players were the problem, or the front office was the problem, or that everything would be great if he had absolute control.
Look, I spent 18 years of my life trying to predict how people are going to react to drastic changes in their life. They're going to be in the spotlight more than ever, both in public and in private. Their financial standing is going to drastically improve. Everything changes. I've seen hard-working players sign their first contract and become lazy and unmotivated, and floaters become hard-working guys once the contract is signed. I've seen mature kids start cutting multiple child support checks by age 20, and overgrown children settle down. I don't need to labor this point.
Another part is that every GM and coach are driven and have an ego that leads them to believe that they can change everything around them. That's part of the job, and it applies to everyone. Not everyone is vocal about it like Doug MacLean, but the ability to recognize that some things cannot be changed no matter what is not something that is acknowledged by anyone high-up in hockey. It's why lazy players will get chance after chance after chance. Every GM convinces himself that the player will respond in the right situation, and every coach convinces himself that the player will respond to him. And even if it fails twenty times, a partial success with one player will convince them it can be done.
So let's assume that Scott Arniel came in for an interview and delivered some televangelist theatrics, scaring the hell out of Scott Howson and Chris MacFarland but making Mike Priest's pants bulge. From what I've heard, isn't too far off from what happened, but I do not speak with certainty on that subject. After the four interviews were done, Paul MacLean was finalizing a deal with Ottawa, Kevin Dineen was basically out, and Guy Boucher and Scott Arniel were all that was left. I don't know if Boucher was actually offered the job in Columbus or not; there have been multiple reports over it, and we're unlikely to ever know the real truth. Now consider what's become of them. MacLean took over a pretty good team with a lot on the roster and a lot ready to step in, while the other three didn't last.
Since we're speculating, assume that it was either Arniel or no one on the list. Howson, not being sold on Arniel, resigns. What exactly has been accomplished? No matter what the truth would have been, it would still look to a lot of people like Howson put the list together, interviewed them, offered Boucher the job but was rebuffed (as was reported), and then was fired for not even being able to handle a coaching search. Even if he had left on his own, made public statements saying as much, and had backing statements from the Columbus organization, the consensus opinion would be that he was fired from above for botching it. It would have meant the complete end of his career in hockey. No one in their right mind would do that, unless they had such a name built up over the years and had outgrown the organization. If it were someone like Scotty Bowman resigning from the Islanders over that, it would be one thing. Look at Neil Smith, who everyone knows was railroaded by Charles Wang and yet still hasn't advanced his career in the slightest since then.
You're asking the ego-driven and the obsessive to simply walk away rather than even attempt to see a situation through. It doesn't happen because it's a crazy idea.