“Because while it is clear to everyone that he doesn’t really represent Chabad, he does prove the point we’ve been making all along.”
He is either a real lubavicher to the right of center who doesn’t believe in keeping what he believes quiet (there are lots of those) or he is someone who knows Lubavich very very well. All his comments and leshonos (aside from the Shofech Domim one) are stuff that I have heard from one person or another. It’s just that he put it all together and posted it.