He doesn't care how far off base he gets -- as long as he's in the game. Sometimes, like on this thread, he's like a streaker in the outfield !
Then when he starts getting flamed, he digs in to stay. It's the 'Dog in the manger' thing -- You're probably too young and innocent to know that one.
Don't know the saying, but I know the type. The people who always have to be right even though everybody and their mother knows they're wrong. The internet seems to attract a lot of those. The worst part is that they can stink up a perfectly good thread.