I had cynically been wondering about the benefits Google might be trying to reap from this angle. The obvious one is good PR. The second is to lull the general concern around ethical conduct of the big tech companies. Perhaps less likely is an attempt to preempt mass flight from their services thanks to some kind of social movement to ditch tech that they might become collateral of.

The less cynical view is that Google is made of people, and people generally want to do good. Perhaps there are simply some influential people in the org that are interested in these kinds of things.