I should add that I'm not quite sure exactly how the trend of homophobia that you speak of is hitting younger people. I haven't noticed a shift backwards in real life or on-line. If you're referring to social media homophobia you should realize that "zoomer humor" is radically different from typical humor and many kids will sound like a deranged homophobes/racists/sexists until you realize that they themselves are gay/black/female and are making jokes at their own expense. That being said, ask before assuming they are or aren't joking.
[0] - I'm not sure about the legitimacy of Slate as a publication but a brief skim of this article makes me think it hits on everything relevant in the controversy (if you don't already know about it; it's semi-common knowledge nowadays): https://slate.com/human-interest/2020/06/jk-rowling-trans-me...
Implicit transphobia is still a thing (it wouldn't be unheard of for someone who's trans here to have an experience similar to yours) but fortunately that's changing too.
Note: I should add that this social progress only really applies to the city I'm in and maybe the two other big ones here. There are some rural areas that are sanctuaries (to the point of sounding like legends though they're 100% real) but most of the state geographically speaking is still as far in the past as the deep south in America.