From what I saw, at least 90% of the people can work like that. They don't need to be particularly competent, unless by competent you mean "show up at work and do something". It really is a very flexible system as far as complexity and hand-holding on the tasks can go.

Are you really gonna worry about 10% who are unable to learn to work in such a system? At some point, you will probably have to dismiss them anyway.

I think the key point is to give people enough perspective (and stick to it if possible) so it makes sense for them to learn something in a bit of depth, new skill, new module, etc. (Sometimes "code ownership" can be good too - if you know you're gonna continue working on it in the future, you might as well do a better job now.)

This is what micromanagement doesn't provide, in fact, it gets you used to the expectation of the opposite - there is no need and motivation to learn and study anything a bit deeper than to just accomplish the next small task. Micromanagement is literally motivating people not to grow, and not to think for themselves.