The behavior he's calling out is obviously abhorrent. But isn't this more due to him airing dirty laundry in public? If this is his last recourse after consulting internally to try and deal with this, then I get it. But there is definitely a trend (maybe not by him) of people running to social media with their complaints before discussing them with those involved. If that is the case i would understand his being sanc…
I'm not saying that the internal processes were satisfactory -- I don't know either way, and I think this position is consistent with both cases. I think the two options available are,
1. Criticise publicly and leave, and
2. Work within the system, and accept outcomes that go against you.