i know an early engineer who worked for a well known founder 10 or so years ago.
The company was sold to a large tech company for like 350mil but what happened first is the VCs/founders created a new company and sold the IP from old company to new company and sold the new company for the 350mil leaving the employees with a worthless company.
So also trusting the founders and the VCs they choose are in my opinion more important then any equity grant offer