That assumption is obviously wrong when you mix financial compensation into it. I've worked with more than a few programmers who were in it for a paycheck, som

That assumption is obviously wrong when you mix financial compensation into it. I've worked with more than a few programmers who were in it for a paycheck, some of them were perfectly competent at creating code for their little niche (CRUD apps, whatever), but were single-language, single-framework, lots-of-maintenance types of guys. Needless to say, them putting 10,000 hours into programming isn't the same as someone who is really passionate about it. To paraphrase: "Some people put in 10,000 hours, some people put in 1000 hours 10 times".