Umm, no he isn't. Unless that is that what you call people who don't agree with you?

Verita84 is definitely a white supremicist. Just ask him.

Does the incorrectness of his beliefs have something to do with whether I should mute his posts?

I'm not telling you to mute him, or that all his opinions are wrong. But he does like monero and white supremacy, do with that info as you please.