It seems like Google is pretty conscious of their own PR, presumably actions like this alert Youtube employees that everything they do isn't in the best interest of humanity.
I agree with the first sentence but not the second.
I think a lot of employees are just not taking a step back to look at the sum of the parts they are helping to build, or maybe they have optimism/trust in their leaders to not fuck everyone over, and others might just draw their line further down the sand (e.g. no Pentagon contracts).
I imagine a brave few are also working to change it for the better from within. I'd definitely choose to work at Apple instead though, Google seems fundamentally creepy these days.