I'm also pretty much 100% in agreement that Minsky ought to have known that what he was doing was wrong. However, I know literally nothing of the situation. It was stupid of Stallman to give a "for instance" because it's always going to be construed as him advocating a really bad situation. But later he literally asks people for copies of the deposition (that he can read with free software) so that he can find out what actually happened. He also had no idea what actually happened and was basically saying that he's not willing to condemn someone without understanding the circumstances. There may be mitigating details that we know nothing about. There may not.
There are people who believe that there can be no mitigating details. They may very well be correct (again, I literally don't know), however, I hate the witch hunt against people who do not wish to pillory others without understanding the situation first.
Having said that, like I said, it was stupid of Stallman to wade into this. He's got a big target on his back and there are people who will take every opportunity to lob something at him.