> the US certainly isn't 100% trustworthy.
The US is the most wildly insane, two-faced and upside-down country in the world right now in terms of military. The commander-in-chief routinely makes nuclear threats, actively hurts his own citizens in times of need, and seeks to decrease military stability by accelerating climate change and isolating his country from the world. The commander-in-chief lies about every single thing in his day-to-day life, as well as his political life; he is mentally unstable and not fit to serve.
The US military is 100% untrustworthy as its direct leader has shown himself to be literally insane.
> there's a real don't-rock-the-boat problem here
The US is the one rocking the boat. It has already happened and it happens daily.
> A world without a dominant US military is a world with fewer US-driven injustices. That doesn't seem like a good bet to be a "better world", though.
I disagree. That seems like a very incredibly great bet, to me. The time of US military leadership is over. That happened the day our Military Commander In Chief stood on his inauguration day and lied about the number of people in front of him.
Perhaps the US will return to a positive leading role one day, but it is not there now and it has not been for years.
All this aside, I do not agree that Google is the right place to develop US Military technology.
Edit: Additionally, the commander-in-chief of the US military also stated point blank that we may not have presidential elections any more in the future. This is not a time to champion US democracy, military might, etc.