I really feel for you here. And I think you're right that this comes from deep weakness at the top. The investors want to get in on the Silicon Valley money. The founders channel the Silicon Valley hype. But once you've started pretending you are a genius who will make billions, you can't really switch to the sort of humility that it takes to really get things done well. So the whole company turns into an extension of the sham performance of the founders.
E.g., really great people I know are constantly sweating effectiveness. They look at outcomes. They want to be sure they're having the desired impact on customers, on the company, on its people. Plenty of mediocre people focus on metrics, on following the rules, on seeking efficiency. Those aren't intrinsically bad, but can turn that way when the proximate measures don't align with outcomes. But the really scary ones I've met focus on appearance. They want butts in seats, the later the better. They create artificial deadlines and dramatic launches. They look at metrics and find ways to manipulate them with no regard for actual outcomes.
If those fools were only harming themselves, I'd be ok with it. But when they harm others, often hundreds of others over the course of their companies, it's truly enraging.