1. These people are rabble-rousers who will never be happy and are disrupting the work environment at Google.
2. These people are highlighting legitimate problems within the company and are trying to enact positive change.
Take your pick. But be aware of both narratives. And be aware that neither of them is unreasonable.
With that said, I have not followed this closely. For all I know, that evidence does exist and/or Google leadership has chosen not make said evidence publicly available.
Seems reasonable to me.