> the people who run FAANG don't understand the dangers of bad metrics is... interesting

They don't. They want some metric to support what they want to do and don't care about good metrics at all.

I've spent the vast majority of my career in FAANGs and it's been the pattern everywhere.

Right now my org has a senior director who is constantly battering managers to tell their reports to fill out the weekly surveys.

Why are the employees not filling out the surveys? Because instead of the old once a year large survey with questions about various levels (including local teams where management cared about the numbers and I could see the actions they took) we now get a survey every week with questions that are meaningless and I have no answer for.

"How does team X deliver on its priorities"?

Team X has O(10K) peoples and a barely countable infinity of projects. Most of which I don't know about and most of which I'm not supposed to know about since things are compartmentalized. So I don't know what team X's priorities are, I don't know how they deliver on them, and I never will know. Asking me and my colleagues is a waste of time and money.

...but none of that matters because the directors want "data" and they want a dashboard showing that we're all giving them "data".