The fact is that FAANGs do things in a very particular manner and on small, focused teams. That's the opposite of how start ups work and applying most of the managerial "skills" that are in place at FAANGs are a good way to apply a ton of unnecessary bureaucracy to a company that doesn't even have an HR department yet.
"Founder is formerly Google and Facebook!" makes me stay very very far away from the company because outside of the VC world the reason those words have power are red flags.