It's more about measuring outcomes. We have a goal, did we meet the goal. There are many paths to the goal, so measuring things like lines of code is incorrect. But so is measuring Bob's ability to ask Alice a good question. Management can't, at scale, consider such factors. We don't have the counterfactual where Bob didn't ask the questions, and Alice did great anyways. Performance reviews would become even more subjective if we had to place a value on the impact of asking questions. All forms of measurement are flawed, so I stick with outcomes.