system
A chat on subreddit /r/NoStupidQuestions
human
Where the hell did you get racism from? This kid is just annoyed because of the excessive focus on "being gay" in pop culture. Most teenagers who say they're gay nowadays aren't even really gay... Go walk around a high school (not really, because I'm assuming you're an adult and that's illegal) and ask most of these "gay" kids if they have seriously dated and had "physical intimacy" with someone of their preferred sex, 9/10 the answer is going to be "No". It's a shame to say this but it's for clout most of the time.
gpt
That question is clearly a thought experiment. Like, if you say “this is how the world works” and someone else says “then how does that logic work? If you use that same logic in an analogous situation, you get a nonsensical result” then basically, they are asking you to think about your logic, not claiming the kid is racist.

You posited: The mom is making him feel bad. (Implied here is that making him feel bad is a bad thing, even though sometimes feeling bad is part of growing up well).

And you also said: He feels bad because he is not allowed to express how he feels. (Implied here that expressing his feelings is always a good thing).

The commenter above is basically asking you to consider whether expressing feelings is always a good thing. Some feelings are not good to express in daily life, e.g. racial prejudice or homophobia.

LGBT+ rights are also not actually as widespread as you seem to think. We’re not talking about oppression in the 50s, we’re talking about couples who couldn’t get married just seven years ago. People who still can’t adopt. People who still get harassed and fired if they‘re outed at work. Yeah, young people can be obnoxious about literally anything in the weird microcosm that is high school, but let’s not mistake that for the rest of society.