Yeah, his wikipedia article says he political alignment is largely libertarian (which from his diatribes seems a good fit).

Not to defend the man, but Piers is not the best debater anyway - he could think of little better to say to the president of the NRA (who was being very civil despite what he might say) and called him a "stupid man" near the beginning of his exchange with him. Jones may have just been trying to go with all guns blazing, pardon the pun, to get his agenda across - however inane it is.

Of course, I have never listened to his show, he is likely always like that.
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We are what we repeatedly do - Aristotle