This naturally attracts people who are interested in making a difference and want to work somewhere that aligns with their values. You don’t go and work for somewhere like Phillip Morris or Oracle if you care about making the world a better place - and neither company would claim they’re trying to do so.
But Google said they were different, and it’s disillusioning to discover that somewhere you love and have worked hard for is just as evil as everywhere else - moreso as it wasn’t up-front about it.
And then you’re going to want to do something about it.