What do you consider "normal"?
We've just become more accepting of people who don't fit the standard mold. So it sounds like anyone clamoring for a return to historical norms is actually clamoring for a return to bigotry: returning to treating gay people like garbage, for example, and denying their relationships legal rights.
A lot of what gay people claim is treating them 'like garbage' is just the natural limitation of a homosexual relationship.
For example, not being able to rent a womb is not being treated like garbage. No one has been allowed to do that for most of history, and most straight people can't do that. Not being allowed to rent wombs is just not being allowed to being what amounts to a slaveholder.
How many people do you know recently that used marriage to secure an economic/political alliance? Pretty common among elites historically, almost unheard of today.
Indeed... most of what modern day LGBTQ+ activists conceive of as homosexuality in the ancient world is just close male friendship.
Half the things people claim were instances of 'homosexuality' in ancient literature are just men fooling around. There are very few instances of men (or women) actually forming stable social structures with commitment in the absence of marriage to the opposite sex.
Ultimately, our confusion in this regard is due to the fact that so few men have actual friends. I sometimes go out 1-on-1 with my male friends to restaurants (often fancy ones). It's a guys night. We're all married with kids. And yet, oftentimes, people will think we're dating or something. It's weird. FFS, I went with my father to a nice restaurant, and they thought we were married. Something has gone very wrong with how we conceive of men being friends, which makes sense, because so few men have any (which probably explains the rise of homosexuality as well).