Well, it comes down to what is a sexual perversion.
The overwhelming consensus up to the 1970s was that homosexuality was a perversion.
IMHO, it still is, but today’s society is much more tolerant than I am.
There are different levels of perversion within the overall homosexual perversion, such as pedophilia, extreme multiple partnerships/orgies and extreme voyeurism.
That is why, with few exceptions, most heterosexuals “get a room”. Heterosexuals aren’t perverts.
Many homosexuals get added pleasure from public displays of sexual acts and the titillation of getting caught “in flagrante delicto”.
So even if homosexualism is completely legal, the perverts still need to do illicit things to satisfy their perversions.
IOW, we heteros generally don’t object to keeping our sex lives “in the closet” i.e. behind closed doors.
The homos, OTOH, demand the “right” to put it in the street, in the classroom, and in front of our kids.
Homosexuals are coprophiliacs. Is it any wonder the streets of the Gay Mecca are littered with feces?