I’m dubious about the idea of trying to shame neo-nazis by accusing them of being involuntarily celibate losers who can’t get a date, one reason being that the tactic fails to work on anyone who can get a date.

Now, you might say this tactic is still useful anyway on others, and for reinforcing the social perception of neo-nazis as losers that no one should date, making it a self-fulfilling prophecy.

But it still seems to be focusing the attack on a fairly non-central part of the question at hand. The reason to oppose neo-nazi ideology is because it’s terrible, not because its proponents struggle on the dating market.