That's a very short-sighted view of a career. In the short term, it is bad for your career, but being a whistleblower who is right can raise your profile significantly and make you much wealthier than if you stay at a company quietly (even if your salary is $X million). In Mudge's case, he didn't need the money, but the publicity probably helped.

Think about some of the past whistleblowers from these companies: Frances Haugen, Timnit Gebru, etc. These are all people for whom whistleblowing was a good career move.