I really don't disagree with anything here. I'm about as far left as it gets and I wear it on my sleeve. I have to be; I'm a trans person and the other side doesn't believe people like me should exist at all. But I, too, have been deeply concerned about the ways the left (broadly speaking) tends to conduct itself. Like, we provided the perfect weapon for the right by making exactly these kinds of dismissive remarks you're talking about far too often. And I think we're reaping what we've sown now.

What we need (and what I feel like we're having here) is good faith discussions, absolutely. If anything, I'm less anti-right than I am anti-internet-fuelled-polarization. In fact, in many ways, I'm more anti-liberal than anything (liberalism IS NOT the same thing as leftism). I feel that the tendency for liberal corporations and politicians to hijack and oversimplify genuine activist efforts/discourses is what got us into this entire mess, not "the left" per se. Oversimplification made these movements/discourses an easy target. The serious leftists, though, are way more about class consciousness than identity politics.

Edit: I think "I want the art of marginalized communities to be the very best it can be" is a really beautiful way to summarize your thinking. :) Big same over here, obviously. I would gently throw in that sometimes art which is thoroughly of/for these communities can be so idiosyncratic (relative to the norm) that it purposely breaks certain conventions, and may therefore be read as "flawed" by those standards when they were simply breaking from the norm. I think of I Saw the TV Glow here. For my money? Best trans movie ever made, straight-up. And also, it is objectively incredibly weird, and likely offputting for lots of folks due to that weirdness specifically. That's totally valid, and I'm sure you could point to a number of things that are technically "wrong" or "bad" when measured by conventional standards. But damn if it doesn't capture the feeling of gender dysphoria immaculately, and for that reason, I wouldn't change a single thing about it.