This whole writing seems to assume that productivity is a feature of an individual and not a feature of a team. That's a wrong assumption. The fairest way to pay is same salary for the whole team.
This writing is also PR for some individual company.
And this writing is three years old, written before the current economic slump. Nowadays the market is not so busy, at least not where I live in.
I 98% agree. Only thing I'm not sure about is if third copy/paste is always a bad thing. There are things like configuration and templates where independency is more important than DRY. Sometimes you do those through code.