I personally find it hard to believe that the average Google employee doesn't know and didn't, by that time, know, that Google's algorithms -- which introduce a selection pressure for content that causes outrage (in the name of greater "engagement", and that's been pretty thoroughly demonstrated) over content which contains facts -- were promoting awful things.

I find it very easy to believe that the average Google employee simply didn't care about that up until the moment it started affecting their friends and colleagues (the "Muslim ban" would have impacted some Google employees' ability to travel). Up until then, "politics" was something that happened to other people, and so they didn't have to bother about it.