Alright, in MSMG, homophobia gets talked about a lot. And whether you like it or not, it's a popular thing in MSMG. Now, why is it funny? That, I haven't thought about. But for most, the reason why it's funny is because the LGBTQ community is too popular. Pretty much the same reason why misogynist jokes like "women ☕" and "dishwasher" became popular.
So if you're part of the LGBTQ community and you don't agree with it. My advice as someone who is bi and has somewhat survived in this stream and was even called based: just ignore it. Don't even flag it, the mods will see it. If you do, you will be called a snowflake and people will hate you. Don't make too much posts about being gay. Just wait until you've made enough friends in MSMG, then out yourself if you want.