That's an awfully profit-scoped way to frame human competence and assumes profit as the end goal. What about hobbyists?

My point is not to presume the competence of others (which, frankly, I don't care about outside of like Knuth and "are you making my life harder at work"), but to point out we should establish our own view of whether we're competent enough based on what our goals are. People tell me I'm a good programmer; I don't really see it. This used to bother me. It doesn't anymore because I've found other things to enjoy in life.