There is another:
c) Human beings are poor judges of merit due to cognitive bias, poor intuition for statistics, prejudices based on emotional reactions to irrelevant past experiences, and perverse incentives. It is therefore justifiable to apply a post correction.
I'm a bit surprised that techies don't see this as obvious. How often do inferior products win due to superior marketing that plays on these biases?
I am also surprised programmers have such confidence in absolute meritocracy in code shops given that every coder knows how hard it can be to evaluate the performance of coders on a team. Let's say one coder closes tons of tickets but does shoddy work while another works more slowly and creates things of beauty. The former often looks better but the latter might be the real MVP. I've seen coders who add little code but are indispensable on a team due to things like deep domain knowledge, great judgement, spooky horse whisperer debugging skills, etc.
Yet suddenly some are convinced of the infallibility of our ideas of merit as soon as someone tosses a culture war grenade in the room.
I don't even want to bring up the softness of some of the areas of science cited by that manifesto or the reproducibility crisis they've had but... Oops I just did.
Personally I am on the fence about diversity measures such as the ones I've heard exist at Google for practical reasons. I am not convinced they work very well and as an engineer I prefer things that work. My sentiment is on their side though, and I have become deeply repelled by the opposing movement (now generally called the alt-right) ever since it unmasked itself. Head over to alt-right subs on Reddit or worse Voat if you want to see what they really stand for. So if I were forced to pick a side I would begrudgingly pick the diversity nazis over the actual Nazis.