I'm fifty. I have known that I am bi since childhood. I lost my virginity with a man a year before I ever had sex with a woman. I can count the friends and family that know I am bi in one hand and I would still not drop the chopstick.
Gen-Z isn't more queer. Gen-Z just has had the privileged of fearing the closet door less.
The fight against bigotry and homophobia has been slow, long, and arduous, but the progress is undeniable. That's why you see so much push back now. Some snowflakes quickly melt without the safetynet of their bigoted gender norms.