There’s being blunt, and there’s abuse. Linus attacks code, not people.

Maybe today, but certainly not in the past. I don’t doubt that Linus always had the best intentions for the kernel, but he nevertheless told other developers they should be retroactivly aborted. It’s hard for me to imagine that this version of Linus and a Linux CoC could’ve existed at the same time.

But I also get the impression that he did change quite a bit since then, now being blunt instead of abusive as you said. This shouldn’t be inherently incompatible with a CoC.