Drumming and generally keeping rhythm is a physical thing. You move your body parts (e.g. bopping head, swaying hips etc.) and it couples with how and when you're playing.
With n=1, for me there is a groove or three that are just muscle memory and I'd need a longer while to sit down and think if asked write them down. They came out from noodling around and coming to "huh, that sounds cool" and I imagine that's not something particularly uncommon for other people too.
I think we lost the thread here. I wasn't suggesting Lars had millisecond-level intrinsic timing and an innovative approach to music theory. I was rejecting the idea that this beat came from incompetence. I think developing an interesting groove and being able to play it consistently in a song, and in live performances for years is evidence of drumming competence.
You don’t play music, do you?
It’s absolutely possible to learn a rhythm, groove or melody wrong, and to rehearse it until it sounds so right, the anything else sounds wrong to you. But your audience would notice.