The problem with "quit and find a company that doesn't lie to you about its culture" is that you can't tell if they're lying until you've made the enormous investment of quitting your previous job and getting hired there.
Even if they're the good guys(tm), their investors can kick out the previous CEO, and management styles can change dramatically for the worse.
If you accept "unlimited vacation," you're negotiating a scenario where a non-trivial portion of your compensation is tied to the goodwill of your counter-party, whose inherent interests are opposed to yours, and where the costs of you "fixing" the situation are dramatic.
Caveat emptor.
