If you ever happen to chat in-person with this sort of highly-concerned moderate, feel free to grill them about how they would deal with violent fascists. Either they cave, or they'll eventually conclude that their immense powers of rhetoric allow them to verbally defuse Nazis somehow. In this latter case, point out that they can't even convince you that punching Nazis is wrong, and conclude that they must not be very good at rhetoric.

Sorry, but I can't even sneer properly at this sort of cowardice. It's pathetic to the point where ridicule is the only response I can emotionally justify.