[aldarn]

I think you misunderstand what "10x programmer" is intended to mean (even though I hate this term and think it is mostly rubbish). A 10x wouldn't make some ungoldly amount of complexity "just because", they would implement the simplest solution that meets the given requirements - hence they're "10x more productive" than other developers; this doesn't mean 10x LOC, just being pragmatic. The ones you describe are the non-10x.

Anyway IMO you have more like 4 types of dev, the ones who fail to write fizzbuzz, the ones who can do the vast majority of what they are asked, the ones that can do everything and can self manage and stay focused on (and clarify) product requirements (probably what you mean by 10x) and the ones that have highly specialized skills (e.g. ML, graphics, embedded systems, etc).

[addicted]

Also a 10x Dev would usually go back to the product manager/client and say that feature X looks kind of redundant or a really edge case, but would take a significant chunk of time to code. Is it really needed for v1.0 considering it will cost 2 weeks of Dev Time?

You obviously need to have a good understanding of your clients and their needs and the way they use your product to e able to do that, but many shops simply ignore introducing their developers to the actual users of the product.