I don't think it's maintaining his world view that's important to him. It's his self view that's important.
He gets bored, wants to stop in, criticize people, feel superior, and leave. He's not here for a discussion, or to prove anything. Except what he feels he's proving to himself.
His occasional stops here are to snipe and insult. He considers this forum and discussion beneath him. This is cathartic for him as it helps maintain his sense of self and validate his opinions.
He cherry picks comments, sets up strawmen, insults, and leaves. He used to be able to carry on a better dialogue. But he's likely a casualty of the political climate we're in right now. Angry and trying to reinforce his view of himself.