To the title:
In a word, yes.
It’s inevitable, unless God chooses to intervene.
> Once gay marriage becomes legal in all 50 states,
> conservative Christian Churches will be declared criminal
> organizations, that violate hate speech laws.
That is the goal.
If not to eliminate the Biblical Church, then to push it underground.
Compromising “churches” will have no problems performing “marriages” of men to men, women to women, groups, the incestuous, the bestial, and even the pedophile.
The fact that we have to wonder who would come out on top in the Supreme Court shows how far we have wandered from our Constitutional roots.