Sometimes you can tell a lot about a site from the kind of person it attracts -- still, you've condemned said comment and there's an end to that sidetrack.
I can't say I knew much about Buchanan before, say, ten minutes ago. Actually that's not entirely true, I knew that he was involved in the 2000 US election (and may have messed up Al Gore's chances of winning Florida, but that's another story), but that was basically it.
Judging from a flick-through of Buchanan's politics, I think he sees in Trump a kindred spirit, and that's where this article is coming from. Not sure it's anything more profound than that, really.