It's more than that, some of us actually believe in a thing called "good work."

The idea that powerful manager saying untrue things shouldn't be contradicted may seem like "obviously correct" to you, but actually at the places where 80% of engineers call that shit out that political manager probably gets booted from the company.

But many people genuinely believe politicians are a net negative on the company as a whole, and in startups many people are willing to do/say what's best for the company without expecting some individual return.