A directive from Linus on the technical roadmap isn't going to solve anything. It could declare someone the "winner" in this particular thread or this particular issue, but lets the personality issue fester.
It's probably best for Linux to work through its technical issues in boring email threads which never get any attention on social media. And its organizational issues and its personality issues, for that matter.
So it's probably good all around that Martin has bowed out. If you reach for the nuclear button whenever the people you're working with don't give you what you want, it's time to go work on your own (nothing wrong with that, BTW). It's not really a question of who's right, but whether people can find a way to work together. That's quite difficult in a big project, so you have to both really want it and be good at it or it's just not the place for you.