If the Coinbase guys were lobbying for "libertarian and anarchist philosophy," broadly construed, you'd have a point. But they're not. They're pushing for narrow financial regulation. There's no principled reason to think they're doing this in furtherance of their personal politics, as opposed to, say, making their customers' lives easier.
As such, I don't see the hypocrisy. Now, I'd be more inclined to agree if the "politics ban" covered activism around crypto policy issues. But of course, then management's position is very easy to see. They hired developers to implement their vision, not to fight it.
There are lots of reasons, good and bad, to avoid politics. But to claim that doing so is inherently political... isn't saying anything. To the extent it's true, it's trivially so. And to the extent it's non-trivial, it's completely false.
Bob grows chickens and Alice grows corn. They trade via barter. We'd probably agree this isn't political in any meaningful sense.
One day, Alice has a clever idea: she can create a digital representation of money. Both Alice and Bob agree to accept these "tokens" in lieu of barter.
Big mistake. CarelessExpert announces to Alice and Bob that their creation obligates them to join in bitter arguments about abortion, climate change, and LGBT rights.
Just playing the bongos is political because it means the environment has been configured in such a way that you can do so. If you play the bongos in the position of a manager or boss, it is even more strongly political as you are using the configuration of the political system to direct societal resources at your whim to play the bongos.
You are correct in your "understatement" claim, though I suspect unintentionally so. Yes, "avoiding politics" cuts into time you could be spending advancing progressive politics. So does writing software. So does watching a movie with your spouse. So does sleeping. So does every single thing that isn't literally "advancing progressive politics."
"No politics = politics" is an utterly vacuous statement.
Washington state is a good alternative. It has all of California’s grievance politics and collectivism but with none of the tax burden.