"Intellectual Dark Web" would be a more fitting category if it weren't such a self-parody.
It's I think worth saying that serious people who have almost certainly put more energy into understanding where Peterson is coming from than any of us here, including having interviewed him in person, have come away from the experience attributing some pretty damning beliefs to him. For instance: I don't think you'd easily win the "he's not an outspoken misogynist" argument. Obviously, that by itself doesn't put him in the "alt-right". But, of course, casually and comfortably engaging with people like Stefan Molyneux muddies the waters on the "alt-right" thing, too (again: in some common meanings of the term).
This is a truly bizarre way to launder your own views through unnamed “serious people,” who, apparently, by virtue of having spoken to Peterson in person, are able to understand his use of the English language better than the rest of us who, presumably, can only see those exact same conversations online.
He's a socially conservative figure, somewhat popular with the alt-right because social conservatism is a central feature of the alt-right (it may be “alt”, but it is still “right”), though his a commitment to Western liberal (in the classic sense) democracy gets him criticism on the alt-right (which is used to democracy at least in the Western liberal form.) Example of both the praise and criticism (focussed more on the latter) from a site which self-characterizes as being within the “reactionary rationalist” subset of the alt-right: https://greyenlightenment.com/sjws-and-democracy/
Should be: “the alt-right (which is opposed to democracy at least in the Western liberal form.)”