I get the point for an Engineer. There the chances to endless promotions are far higher if you stay nice and calm all the time. Hard earned experience, never got a promotion but always more money and "crazier" jobs over time.

But I mean for anyone with team responsibility: staying silent is bad for you, which is okay if you're in for the career. I totally respect that, people should be ambitious if they want to. But this is the recipe to make workplaces toxic and bad for the whole team.