I think you’re mostly right, although I’m suspicious that the “simply produce a lot of work” framing is off by 15 degrees.

I’m not 100% confident because I know that advice has been replicated in the laboratory.

But, I think there’s a background process of applying taste without triggering resistance. I’m trying to get at the pairing of prolific with ambitious.

That’s basically the long term observation of deliberate practice. At some point you become an experienced non-expert unless you keep challenging yourself.