I think the logic is that if you reward someone for finishing work quickly then they will rush through their work and quality will suffer. The counter-point to

I think the logic is that if you reward someone for finishing work quickly then they will rush through their work and quality will suffer. The counter-point to that is you can balance that out by having quality controls such as unit tests and code reviews. If someone writes shitty code then it'll be pretty obvious and they should be corrected.