I do agree his language and tone can be very painful to read. Imagine getting called a moron in front of the whole world, when you could have private conversation first with a smaller group.

When I read his reply, I could feel the pain. I imagined I would reply back to him and say "well fuck you too." When I finished reading the email, regardless of who is more right or more wrong, I can understand and feel his frustration. I would absolutely go mad if someone messes with something I care about, and then have the guts to do fact checks.

But I still think there is room to offer an olive branch, honestly. But given how busy he is, and how many shitty patches they get, I can understand his frustration.

That being said, it almost seems like no one other than him, can do a better job in keeping up with the quality if he has to be the one yelling all the time. When Linus is no longer involved (for any reasons), can Linux kernel project continues to have quality code?

A couple years ago Linus shared his views on insult: respect should be earned. https://www.youtube.com/watch?v=JZ017D_JOPY

Worth watching.