That's really not relevant for the situation we're in right now. He's capable of producing more than his replacements. If we're only going by points then yes maybe he should have been sent down and once we established that Quine/Fritz can't produce or defend, he should have been called up.
How is how Ho-Sang was producing not relevant? The fact that he wasn't producing AND was a turnover machine/defensive liability is pretty relevant to the discussion about whether he should be playing.
Players like Ho-Sang (high risk, high reward) have to consistently produce in order to justify keeping them in the lineup. Ho-Sang wasn't producing at the time he got demoted. So he kind of made Weight/Snow's decision easy for them.
It would be one thing if he was producing like Barzal and still got sent down due to defense/turnovers/risky style of play. Then you'd have an argument for him. But when the guy was literally producing ZERO production, yet bleeding goals against, I don't see how that's irrelevant to whether or not he should be dressed?
Well, that's a new one. Unless I missed something Fritz and Quine have generally been playing wherever the coach put them, RW, LW, or C. But certainly, I guess it's possible Weight strongly prefers to have 2 AHL centers with one of them shifted to wing instead of making minimal roster adjustments for Hosang. And it's not like either of those centers are any good at any position they play. But I suppose I'm not a coach and I don't understand the deep nuances and the impact of having Tanner Fritz play right wing and Alan Quine center. I'm sure things like that are really important given how useless our bottom6 is.
It's not really a "new one" at all. Teams will often call up guys based on the need at that moment, rather than just look to see who is currently leading their AHL team in scoring. For instance, if Cizikas goes down, chances are the first player called up will be whoever can handle Cizikas' role. They're not going to bring up the offense-only winger who can't play center to replace him, even if he's more talented than the guy who got called up instead.
This isn't something isolated to the Islanders. My Penguins sent Daniel Sprong down recently (similar to Ho-Sang in that he's an offensive winger who is suspect defensively) because they didn't have a spot for him in the top six. It didn't matter that he was "better" or more talented than guys they're playing on their 4th line currently. It's the fact that those guys fill roles Sprong can't (ie. PK, defensive line, take faceoffs, etc.).
As for re-arranging the lineup to accommodate him, as I said above, maybe -- maybe -- they'd do that if Ho-Sang's production justified it. But when a guy is pointless in 6 games and is a major liability defensively/turnover-wise during that stretch, no sane coach is going to shuffle everyone else around just to fit him in. No coach, whether he be Weight, Babcock, Quenville, Sullivan, whoever, would do that if the kid isn't giving him a reason to do so (ie. producing).