They might not be "alt right", but they're really fascinated by it. Here's Timcast:

Propaganda, tribalism, and Ben Shapiro in Berkeley

The Alt-Left double standard.

What is bit coin and can you still make money by investing?

Here's the second user:

Pewdiepie did nothing wrong. Anyone acting offended is probably lying through their teeth.

The people who know/care about Shapiro are conservative, same goes for those defending a guy who makes jokes about Jews and uses the n-word.

Your third user just happens to "retweet" the first. It's a very small and focused community there. Also from the last user:

BREAKING: Now is your chance to become a founding investor of Minds. We are taking the idea of a people-powered global network to the next level. Invest now before we reach our goal!

That explains the evangelism?