Actually the normalisation of homosexuality started subtly in 1990s through ads.It worked so well too
You and @Yonis , are absolutely spot on. They are normalizing this sort of thing.
Some time ago, I was staying over my cousin's house for the weekend. He has three kids, and they were watching this film, on CBBC (UK kids channel), called 'Boy in a Dress', it was about this boy, who wanted to wear a dress to some school dance. And there was another show, on the same channel, called marrying mom and dad. It's about bastard kids who organise, their unmarried mom and dad's wedding. On a particular episode, it had this gay couple, who's adopted kids were organising their wedding.
This is what they are pushing onto the kids.