“Only 1.8 percent of Gen Xers identify as bisexual. A full 11.5 percent of Gen Z adults identify the same way. And there’s a much greater number of millennial and Gen Z adults identifying as transgender than previous generations, though it’s still a fairly small percentage.”
…
“for a significant amount of American history, especially the late 20th century, our culture has treated LGBT people as dangerous or deviant and therefore individuals were encouraged to suppress or just not act on non-heterosexual attractions. There’s been an absolutely dramatic shift in acceptance of LGBT people over the past 20 years and so it should not be surprising to see a greater percentage of young adults willing to identify as LGBT.
The increase in the number of LGBT self-identification is a positive result of allowing people to define themselves and their sexual identities absent government pressures forcing them to conform to majority preferences in order to enjoy the same rights granted to everyone else.”
https://reason.com/2021/02/24/as-generation-z-comes-of-age-america-is-getting-noticeably-more-lgbt/