They never answer that question: who gets to decide.
They think they will get to decide but they’d be in for a surprise if laws limiting speech would go into effect. We’d be in East German Stasi territory in no time, neighbor denouncing neighbor.
Honestly, in my experience these people are not very smart and haven’t read any history.
They believe they are the only ones qualified to decide- and that they have to determine it for us because we’re either too dumb or ‘too intolerant’ to make sound decisions- (and of course by intolerant, they include anyone who doesn’t agree with their Christian hating, islam loving, gay agenda driven, anti-second amendment destroying ideology)