Do you really think GP is arguing in favor of xenophobia? I'm undecided on this topic, but nothing they've said (that I've seen) suggests xenophobia. GP even indicates in a different area that they've traveled internationally, which is a difficult thing for xenophobes.

Unless you have somethign to point to that gives you confidence that GP is arguing the virtues of xenophobia, it's likely to be counter-productive to ongoing discussion.