(Sorry if this comes off as patronising, words are hard).
I think with any criticism it's a good idea to look at what could be causing someone to say something, not just what they're saying. Like as an easy example, if someone says 'this season has too many episodes' they don't necessarily want fewer stories, they may even be satisfied if it stuck to the same pace, it could just be that the mysteries are being drawn out too much or whatever.
So when you see 'support group' show up more and more often, I reckon that's because viewers are reading what other viewers are saying and thinking 'yes, that best describes the problem I'm also having!' It doesn't necessarily mean that is the root of the problem they're having with it. It doesn't necessarily mean that they have any clue how best to solve it either (unless they're also talented writers). But it does indicate that there is a problem.
Like here:
That's Burnham getting emotionally distraught or screaming in pain in
literally every single episode of season 2. Almost anything is going to become unwelcome with enough repetition (even criticism

).
But what's the real problem here? Is it that Burnham overreacts to things and it makes her less credible? Is it that she's been faced with too many things that
anyone would have a reaction to? Is it something else? The writers are the ones that have to look at their feedback and then figure out the root of these issues and how to fix them (or not, if they're happy), all we can do is say 'Burnham's crying
again?'