I would put money on the probability that 99.7% of America's Alt-Right have never even heard of him, let alone would sit through/comprehend his talks.
I fart on that source too, if anything it's praising Peterson for being the reserved yet confident white man that (the author believes) alt-right people would like to see themselves as.
Maybe post specific noted inconsistencies or criticisms, "i don't like him cuz other people said I shouldn't" probably isn't your strongest argument.