https://www.theguardian.com/technology/2019/jun/07/google-wa...
So to clarify, both of the female Google employees who lead/organized the protests have now left because they say they faced retaliation. That looks very bad for Google.
Of the walkout organizers alone, four out of seven have now left.
On the other hand, if you're organizing a walkout, you're probably pretty fed up already. How far are you from quitting at that point? Probably not very. If you organize the walkout and nothing changes, even if there is zero retaliation, do you quit?
At a minimum, this probably indicates that there was not enough improvement, fast enough, at Google.
Note well: I am not saying that there was not retaliation. I am saying that this, by itself, does not prove retaliation.