No, I think polygamy first, then incest. But yeah, legal restrictions on marriage among consenting adults are done. The precedent has been set: The state has no compelling interest in telling consenting adults they can’t marry the people they love.
Scratch a homo find a pedophile, EVERY TIME. If they can adopt a kid, they will. If they can buy a Uterus they will buy one as a surrogate and wait. If they have to they will pretend to like a single mother to have access to her pubescent and prepubescent child.
It would all be easier if they can just convince people that it is natural and in reality it is even Christian to have sex with children. To deny them their nature is just your own prejudice, bigot!