The homosexual argument does not checks out at all. All around the world and history, making kids to reproduce was not an issue at all. The rather small amount of homosexuals not having sex with opposite gender would not be an issue at all for them. Keeping kids alive was an issue. Preventing yet another kid after you had 7 and little resources was an issue. Surviving childbirth especially first one, was an issue.

We ceased to have many kids only after contraception.

So you do not hear that argument, because it is historically unlikely to be true and is just a rationalization.