I think most people couldn't care less who's right or wrong in this discussion. They are simply reacting to the discourse.
Personally, I'm far from convinced that there even is an objective right or wrong in this question. It's probably just a matter of taste and/or perspective.
I find Linus behavior rude because in discussions like this he seems to have little to no understanding of other perspectives than his own.
Either that or he is deliberately provoking this other fellow to get him off his high horses.
In either case, it's not exactly accepted public discourse.
He has said himself that he needs to do this to drive his point across, and given the medium and audience I can agree that the political challenge of running the project must be huge.
But surely there must be a more diplomatic way to the same end?