At which point wouldn't they switch to BTC? Agree or disagree with who Voat is and what they say, but I can only assume at least one coin exchange would be willing to do business with them.
But to the moon, right!
Voat's content is by reputation alt-right, and bald-faced fascism. It's the fringe of the fringe, and the type of content that gets you cut out of payment networks.
Though, speaking of business sense, I don’t see why Parler would want Voat. They already have their own community. If they saw business value in a forum system, they would just build it.