What should he have done? Kept quiet? Attempted (and likely failed) to obtain a meaningless private apology, for multiple instances of public belittlement - while the bully carries on bullying?
No. As he says in his post - "It’s apparent that Felleisen has avoided accountability for a long time. I’m far from his only target. I’ve seen him verbally abuse and heckle others. I’ve heard other accounts privately. But I’m only part of the cover-up if I choose to be. So from now on—I’m not."
And further on he directly responds to your objection:
"In general, I have a strong aversion to sharing any kind of personal or confessional anecdotes on the internet. I’ve made an exception in this case because the concealment is worse."
No. As he says in his post - "It’s apparent that Felleisen has avoided accountability for a long time. I’m far from his only target. I’ve seen him verbally abuse and heckle others. I’ve heard other accounts privately. But I’m only part of the cover-up if I choose to be. So from now on—I’m not."
And further on he directly responds to your objection:
"In general, I have a strong aversion to sharing any kind of personal or confessional anecdotes on the internet. I’ve made an exception in this case because the concealment is worse."