I think a lot of the skepticism here is drawn from the experience people have with companies that are culturally very different from companies like Google. Those companies are intensely management-driven, heavily siloed, and have very little internal inter-departmental communication that doesn't go through a layer of management. Difficult questions never get asked because management doesn't want to make waves or risk their fiefdoms. Documentation is hidden by access controls. Employees keep their heads down and do what they're told.
Bay Area tech companies such as Google are culturally very different from this. The silos largely don't exist, and management is not used as a way to funnel and control communication. Internal candid dialogs of surprising vigor can be found about any controversial issue. People are not afraid to ask pointed questions to high-ranking people. Policies and documentation are widely accessible.
It is, quite frankly, unthinkable that something this wrong and this blatant, involving thousands of people, would be allowed to happen for years in a culture such as this. And in a company like Google, "asking around" is indeed productive and would result in open and honest responses.
Generally the hiring pipeline at Google does not involve a hiring manager until after the individual has been accepted. There are exceptions for special roles and people, but for the software engineer case, we require that someone be generally competent across the board. Once they're in, then their specialties and interests factor into what team/project they start on.
More earnings than not banning them and letting them continue to make money for Google?