Arnold Kling asks what progressives believe in this post. I don't think his own answer is that far wrong but it still sounds like a libertarian who fundamentally disagrees/dislikes with progressives. When Tyler has a go at the question it sounds like he believes in it. While he's not a progressive he does agree with some of his points, but it's hard to tell which ones.
I'd say that most of his posts don't interest me, but when he goes into this mode there's no one I'd rather read.