Because someone understands what it is going to mean to live in a white minority America does not mean they fester in dark corners of the internet. It means they understand where this ends.
What I am saying is that by far the largest segment of the Alt-right is unfocused on whiteness. As an example, take The_Donald subreddit—which is 100% Alt-right. It has 317,000 members, and is growing at close to a thousand a day. It focuses not at all on whiteness.
If you can show me a whiteness-oriented Alt-right site with 300,000-plus members, that is growing at anything close to a thousand a day, I will stand corrected.