This isn't just about developers and hiring practices. This is about systemisation and bullshit metrics being used to make opaque and life-changing decisions.
This is about the same kind of shitty thinking that results in surveillance states.
"We can't employ/feed you/let you travel/let you have a mortgage/let you open a bank account, you are Invalid."
"Invalid, what do you mean?"
"We are not allowed to tell invalids why they are invalid. Report for reprocessing."
Edit: Oh, and psych tests are bull. It's pretty obvious what the "right" answers are - so all you actually succeed in doing is filtering the psychopaths in.