Yeah I have 15 year old daughter, so my perspective is definitely skewed by that and it's hard to say how typical she is. But she has friends who span the typical North London ethnic and class matrix.
I think my point is that, sure, these things are policed, still. But they are policed a whole lot less than they used to be.
So my daughter seems pretty OK with kids being gay, vegan, trans, emo, into grime, gamers, those dudes who are into my little pony, etc.
Her own musical tastes are pretty much "urban" and actually seem to focus specifically on some artists rather than a general breadth of stuff. But I mean she is 15 so I wouldn't expect her to actively embrace a tonne of different things yet. She knows about drill and trap and all this stuff I'm only vaguely aware of.
I think that being able to be a black punk who is also gay, or a muslim skateboarder who supports Arsenal and likes grime is in some ways still quite confining but it's not as confining as not being able to be these things, which is what we had in the 70s and 80s.