I dislike companies that push a political agenda when the product or service itself has little to do with it. Privacy politics is fine, since that is a core part of Mozilla and Firefox and is very neutral since everyone can enjoy privacy. It is also part of the browsing experience.
But pushing stuff like "white privilege" is just pushing away users like me. I use Brave, which is a company founded by Brendan and they don't push anti gay marriage politics on me even if that is what they may support.
I just don't want that in my browser, it makes it a shitty experience. I don't understand what's hard to understand about that. I am also a web developer, so pissing me off will just result in me not testing the website in Firefox unless my users specifically requests it.
How? If you don't care about politics, why would the politics of the organization running the browser affect your experience? Aren't you therefore virtue signalling (in this case for maximal free speech) by not using Firefox for political reasons? You haven't mentioned any product features/decisions made as a result of Mozilla's "virtue signalling" that affected the day-to-day experience of using Firefox.