Uber's problem was the workplace was toxic. In a former company, as a straight guy I've been hit on by another guy who was my team lead (and well connected). I can tell you it was not comfortable. I ended up leaving to another project as a planned transition, but my initial complaints directly to that team lead were laughed off as "I'm kidding (but I'll try again)".

I bet there are a LOT of unreported such cases.

Susan Fowler's case has less to do with race/gender than sexual harassment and abuse of power. I sure as hell would avoid working there if that kind of behavior goes unchecked.