Linus's behavior is not an existential threat to the project since it's one of the most successful projects in human history despite the fact that he has always acted like that.
Despite, or due?
I had seen successful projects leadered by far-from-polite guys a lot to not see some connection on it.
I don't like, I'm pretty sure that few people like it, but this happens more than successful projects leadered by more-than-polite people.
There must be some connection, no?