Fallacy #1 contradicts itself--if geeks hate ostracism, where on earth are the people who hassle and chase off newbies coming from? I don't believe it's refuse to ostracize at all, but an unwillingness to be the one to bell the cat. If geeks truly hated ostracism, they would be upset, not cheering, when somebody finally gets up the nerve to tell Cat Piss Man to crawl back under his rock. They just don't have gumption.

#4 is hilarious, but oddly I don't know any geeks who do this. I do know one non-geek, a natural social butterfly, who does.

Most of the socializing-with-geeks problems I've run into tend to be in the 'lack of social skills' and 'narrow interests' categories. It's hard to spend time around people who interrupt each other constantly and can't talk about anything other than the pros and cons of 3.5e.