Publicly "documenting degradation" - at the huge, tech-savvy firm you're still employed by - may not be the best of career moves. Nor of much use if you're trying to fight the degradation. Who, in middle 80% of Google's org chart pyramid, actually cares?
> "Who, in middle 80% of Google's org chart pyramid, actually cares?"
I agree with you except for this part. People at the FAANG level sometimes actually do care about fixing problems for both good and bad reasons. Some people take pride in their work and want to see their product succeed; it can be immensely gratifying to see your work garner positive press and be used by tens of millions of people. Some people tie aspects of their identity to pride in being at a FAANG; arguably this isn't healthy but if it motivates them to create better products, who are we to judge? Some people care because being seen to point out and propose solutions brings them visibility and promotions and this, for good or of ill, does work. And last but by no means least, some care because fixing problems hopefully will increase share price and make them even wealthier.
If they actually didn't care, they wouldn't have bothered to write their posts after being laid off.