I think your right Josh with a couple caveats:
The alt right has become very good at deflection in arguments. I listened to discourse when an alt right supporter joined a philosopher listserve and noted arguments at some point were not addressed but just deflected. In that way it become difficult to call BS. You must step back and say look racial or religious seperation has occurred many times and it always comes down to genocide.
Secondly, since argument seems difficult, it is important to recognize the other methods people use to promote these ideas. It often come down not to givng the best argument, but in understanding how unacceptable ideas are made to seem acceptable. Again, in the big picture, it’s about how the John Birchers have managed to take over the Republican Party.