"Pete is not any kind of "aggressive."
He is entitled to express his beliefs, and has done so with a complete absence of aggression.
There has been aggression showed to him."

Most of the studies were done in relation to work requirements and dealing with difficult people in the workplace. pete is in a social medium, but still exhibting the negative traits associated with the behavior. As in demeaning the education and qualifications of those with opposing viewpoints and basically setting up two standards: one for those he approves of and the second for everyone else.

"passive-aggressive personality disorder as a "pervasive pattern of negativistic attitudes and passive resistance to demands for adequate performance in social and occupational situations". Passive-aggressive behavior is the indirect expression of hostility, such as through procrastination, sarcasm, stubbornness, sullenness, or deliberate or repeated failure to accomplish requested tasks for which one is (often explicitly) responsible."

One of the most frequent complaints about pete is that he demands debate but ignores every convention of legitimate debate... which does result in some verbal abuse...

but you are incorrect in assuming that pete is not aggressive... he is very aggressive in his passive aggressive manner. he may fool you, but there's plenty of others who are on to him... and have left. I prefer to continue pointing out the lack of substance to his arguments and why I consider people like him dangerous to a free society that needs to be able to agree to disagree.