The “can't answer” thing is probably the reason I never contributed. I don't know the specific reasoning behind it, but it's such a self-defeating solution to whatever problem they thought they were solving.
My favorite point was when you're the single person to have worked on a problem, published an answer, published a paper had the answer accepted and some MUPPET edits your answer to mean something else entirely, and it has your 'name' now beside an incorrect answer.
I’m curious what both of these comments are referring to, since it’s not supposed to take any privileges to answer a question on Stack Overflow (you can even answer without making an account). Maybe some anti-spam block?