When I grew up in the 80s it was all totally OK. A bit uneasy still but OK. In the 90s things improved even more. Being gay was just normal, not even special. Not that everyone was gay but it was just normal the way some people are blond and others brown-haired. It wasn't even a 'thing' anymore. It just was.
But now it has definitely become a thing spurring lots of hate again. And it saddens me. We had this covered. Only trans wasn't really a thing when I was young but queerness was. I think it was more just not a thing because the medical options weren't as advanced as they are now.
I think polarisation of society has played a big part in this. I think religion also plays a role as many religions frown on this. In the 90s our society was really 'done' with religion, young people were completely disconnected from it. But it has made a comeback for various reasons.
This is where I consider "pride month" relevant: I'm not LGBTI+ either and for large parts consider the hate a edge phenomenon on internet and in some groups and more or less forget about it. During pride month there are so many anti-gayncomments one can overhear, which to me serves as a reminder that in my bubble it's not a problem, but once you step out it's a crazy world ... (I'm outside the US)