The Minsky defense was not the primary, most important reason RMS can't serve as an effective, inclusive leader for free software, it was just the one that got the most attention. This does nothing to address the numerous complaints of harassment towards MIT students, the _other_ times he spoke out in implicit support of pedophilia, the public gaffes that are unacceptable as a public representative (e.g. the foot ski…
He has been treated unfairly many times and that is, completely independent of whether he's the best choice as leader for the FSF, wrong. You do it here: "the _other_times he spoke out in implicit support of pedophilia...". He wants to have a discussion about what makes sex between people of varying ages wrong. He applies normative principles to it and can't see why it's wrong (e.g., age of consent varies...why would…
Great, it's an interesting philosophical question. If the issue is so important to him, he should transition to a career in philosophy, or sociology, or anthropology.
However, as a board member of the FSF, a public-facing leadership role, his job is to promote free software and nothing but free software. He shouldn't muddle that message by talking about ideas that are generally taboo in normal conversation. And I don't think it's just the [blue-team elite coastal] public for whom sex-with-minors talk is not regular dinner conversation, or at least I hope it's not.