I also think its being used to filter out people that aren't basically a mirror for the interviewers in many instances.

I've noticed a huge tightening of the rope around that sort of thing.

I can't tell you how many times I've passed all the tests, all the interview things, get to the final round with the team and the rejection email comes in despite having good conversations. By all accounts, I believe any person would say the interview went well.

my peers are reporting the same things.