Indeed you read that backwards. He's saying that Thiel supporters and apologists can be found on HN more easily than on other sites. I'm not sure what to make of that claim though - he doesn't (or rather the events related to his companies that make it to the front page don't) seem very popular around here to me.

Too late to edit, but based on the reply’s I got I didn’t interpret the comment incorrectly. Seems like it’s time for bed then.

he's not talking about his critics but his supporters & people like Thiel.

I think they are saying they want to track the ideas of people who support techno-fascists like Thiel and who don't think that ideology is insane, and that it can be difficult to find them online