To me, it sounds like people wanted to "hold him accountable" for upsetting them. You clearly think otherwise.
And I don't know, but the article makes me believe he is not out to attack people. Some people have also pointed out cultural differences that are likely at play here: https://news.ycombinator.com/item?id=26168899.
Again, you clearly think differently given one of your other comments: https://news.ycombinator.com/item?id=26170030.
No this is exactly what I think. I think it is valid for people to air the grievances. I think the difference here is that you are skeptical of the validity if their complaints. If I am right, this is a pretty fundamental difference in world view that I doubt can be reconciled on a HN thread at this point unless you disagree
How do you know whether or not the things he said were worthy of reporting to HR? He didn't say what they were for a reason