In many cases, although perhaps not this one, whistleblowers have had an extremely active and political Twitter account when hired, or are literally being hired _because_ of their wokeness.
Do silicon valley companies not screen for intensity of political views during job interviews in order to prevent issues like this? They certainly don't seem to. Political views and ideological values are subjective, so in a large enough organization you can't avoid some people getting very upset. It would seem like it would be better for business to just not let people join the organization if they're relatively likely to one day go on a moral crusade.
I think it's only a matter of time before people who are militantly political or ideological -- on either side of the spectrum -- are going to be seen as toxic by any company big enough to care.