I disagree with most of this. Compared to anyone else that faced Khabib, Conor looked better than all unless we want to believe Khabib strung it out to dish punishment. Conor I want to say is the only one to win a round against Khabib.
The 1st Diaz fight was at a much bigger weight than he was training for. The 2nd … I’m not going to debate and Nate is absolute cardio freak and beast. Look was almost happened the last Diaz fight. Discounting Alvarez is not fair and Cerrone seemed shell shocked in the moment.
The whole point that was replying to is "MMA fans aren't buying it anymore". Meaning they aren't buying McGregor's bark anymore.
They once bought it because McGregor could back up his bark with a lot of bite. And usually very quickly.
There is no question that the Khabib loss contributed to MMA fans not buying into him anymore.
It doesn't matter that he looked as good as anyone has ever looked against Khabib. The fact is that he was defeated very convincingly.
Conor's schtick has basically always been: "I am the baddest man on the planet and I am going to kiss anyone's ass that steps into the cage with me".
The way that Khabib pummelled him
permanently damaged the effectiveness and believability of that schtick.
So when he tries to act that way now, the average MMA fan doesn't buy it anymore.
As for the other fights that you discussed?
It is true that Conor ended up fighting a heavier opponent that he had been training for in the 1st Diaz fight. But I think this is neutralized by the fact that Diaz took the fight on about 2 weeks notice. He wouldn't have had any kind of meaningful fight training camp leading up to that fight. I highly doubt that Diaz was anywhere close to 100% fighting shape and condition.
Alvarez has a reputation for being susceptible to strikes. Beating Alvarez and thinking it looks great on a resume is similar to how Tyson beat some guys in the 1980s who had good records but glass jaws.
You may think Cerrone was shell-shocked, but I think Cerrone was simply way past his prime and was simply fed to McGregor as an easy opponent. Including that McGregor loss, Cerrone is 0-5-1 in his last 6 fights. Clearly he isn't a credible opponent for McGregor fans or MMA fans to put much emphasis on.