I don't know why you felt necessary to rephrase the final conclusion (I've read it - notice, by the way, that it was also the conclusion of the original benchmark) nor to introduce Torvalds' style (I mentioned I'm familiar with it).

Anyway, I do not think that a forum that calls itself "hacker news" should adhere to that dogma that any topic claimed by an authority to be complex should never be re-implemented on first principles. And I doubt the young Linus would have paid much attention to that kind of advice when he started developing a new operating system.

Personally, the conclusion I take from that thread is simpler:

On a situation when N threads are runnable on N cores with N-1 calling sched_yield(), one must not expect the Nth thread never to be scheduled out for a whole slice on Linux (for some or all of the reasons listed by Linus, none of which seems to address that exact case unfortunately).