I agree with your opposition to his pacificism. There is a time for peace, and a time for war. Open borders is also a bit utopian in the current world--or downright masochistic following Sheldon Richman's argument ("flood the system, let it burn"). But I also see the logic of that question as ultimately one of private property rights and freedom of association.

I am willing to say I disagree with him on these matters but I would not go so far as to call him "profoundly evil" and/or "dangerous."

Full disclosure: I know him personally, have since our college days, and he is far from evil or dangerous. He's brilliant, kind, and hilarious, even if we disagree on a few matters here and there.