Perhaps ADHD is mostly nonsense, but what I do know is that adderall made me go from a lazy bum failing all my classes to the top student in the department. So it is worth measuring the opportunity cost of under performing. If it works it works.
laws should be based on logic and not emotion. unfortunately I doubt anyone will campaign against this and if they do they will be portrayed as pro-cronyism or that they are somehow for the things that this measure aims to prevent.
the UK seems fond of things like this though. As I recall you must be 18 years old to buy a plastic knife, as it is considered a deadly weapon.
why is diversity good? forced diversity seems very contrived. why should the percentage of women hired be higher than the number that graduate from school with a CS degree?