So basically we should have "Irish Pride", "Polish Pride", "Jewish Pride" etc. days as well? Plenty of groups have overcome oppression but don't really have pride days. Just seems a bit weird.
It's not.
I'm reminded of when people complain about Black History Month and ask, "When's White History Month, eh?" And the answer is that every month is White History Month. Because white people have more or less wiped black people out of popular history. This erasure is just as present for LGBTQ+ people.
(If you're American, I don't know how you can live in the US and not have noticed this)