I don't subscribe to that guy's political philosophy, but if he is a good, competent pilot with a good record, I don't really care about his political beliefs. If the transmission indicated some mental illness red flag, that is another matter (the German fly into mountain concern). However, most of us have been caught in a hot mic or overheard comment that was inadvertent. A slap on the hand for first offense would probably be sufficient unless there are other concerns that haven't appeared in public.