They're probably far-right, which is why you find people in Nazi bars like MeanwhileOnGrad using it frequently: (credit to @Diva@lemmy.ml )

CW

Funny enough, lemmings.world shut down because this prediction was wrong, the communists are here to stay.

In that sense, I'd react similarly to whenever a fascist, Zionist, etc. starts attacking me. None of their points hold any water, so just point that out.