No such thing as gay before the introduction of media and the work of individuals such as Marcus Hirschfeld and Wilhelm Reich, later popularized into the public imagination by media. Look up when the word and behavior was first coined. There has been men who’ve had sex with men or women who’ve had sex with women in the past but as a expression of a more complex conception of sexuality, still reasoning heterosexuality as the norm, and singular attraction to the same gender as an identity is entirely novel. In a majority of ethnographies the concept of same sex attraction is absent altogether (59%) irrespective of religion.
Thinking 1000 people in a town of 20000 can hide being deviant is just a hilariously myopic view of interpersonal relationships btw.
Not sure if you're a believer but Loot's people were destroyed because they were practicing homosexuality. The Romans were also practicing homosexuality.