I think he was just being polite but then who knows, we don't get to see what's going on behind the scenes, we just see the outcome of their decisions.
To say the contrary of what you think is not being polite, is a stupid communication rule that in other places of the world would just make things more complex to understand. There is the possibility to just express what you think in a balanced way. One can just say: she tried to fix a complex problem, that many experiences in the past proved to be very hard to fix. And she is stepping down now after the recent happenings. Or something like that, but to say he did an incredible job when all this mess happened is not a good form of communication.
I'd agree for the most part but especially in North America, there is a culture of beating around the bush and most people avoid confrontation or directly addressing the problem of course unless the other person has an inability to recognize the issue. I'd say even for someone who has a large stake in a publicly visible company, it'd be tough to break that mold even more.
I agree that it could've been better worded without coming out as blunt or being overly polite and politically correct. But then again, Ellen Pao sued her former employer based on questionable grounds (gender bias cried the wolf) and timing (her husband is bankrupt after scamming investors).
If I was in Sam's position, I'd be careful not to awaken the bees nest and just hope that the cold season comes and they all die.
