As a bolshie type myself, very quick to moan at higher-ups, I think we need to be realistic that often we grunts don't have the big picture (especially the politics) and unfortunately that won't stop somebody lowdown move from merely internal letting off steam to anonymous public borderline slander.

There is Glassdoor etc though for people who want to have their say; that all these platforms will be gamed and manipulated is a given.