A lot of it is because the only book they all have ever read is the turner diaries. In the book a neonazi group does some terrorism and this magically leads to white people winning a race war.
It's terrible writing written to appeal to terrible people.
Sounds like a perfect pitch to sell more ads. Like I said, I would hesitate to actually trust any statistical analysis of the effectiveness of advertising done by the same people wanting to sell more ads.
In a capitalist economy there's just not a real motivation for researching advertising unless you are a marketing agency. So the vast majority of information is intrinsically biased.