Money is a proxy for other things. In the places where meta has offices, the cost of living (housing, childcare, healthcare, etc etc) is so high that working for a company that pays like Meta can be the only way many can afford it all.

It's hard to expect people to sacrifice a comfortable non-extravagant lifestyle for principles.

Are there some purely money-centric lambo loving single sociopaths at companies like Meta? Sure.

However,there are probably many more employees who are not thrilled about the company's business model but dependent on the pay, while living in a system concentrates wealth and access to both capital and doesn't guarantee or make affordable the aforementioned basics of modern life.

Hopefully many of them wake up to the folly the system that makes u like Meta (or Apple, Google, etc) effectively gatekeepers of a good standard of living, but until then it's hard to question their motivation for working at these companies "for the money".