I have experience with this myself. In my country it was rare wirh black people when I grew up, and there was a lot of actual racism. I was also racist back then because I didnt like black people. They were different and annoying.

But as more and more black people have arrived in the country, millions of them, they are everywhere. And almost nobody is racist anymore. Its normal for everyone who grows up now. Nobody thinks about it.

So it will be the same with gay people. It will take time but eventually, the generations who grew up with many gay people around wont hate it at all, or think about it. It always happens with time.