> That does not make it "morally absurd" to set 18 as the legal age of consent
Looking again at what he said, I think his main point was about whether the particular hypothetical should be dubbed "rape". Now, you may say "someone under the legal age of consent cannot give said consent, so ergo the act is rape". Which is true, but even when the law has to draw a bright line regarding the age of consent, the law still does distinguish between "statutory rape" and "forcible rape". Both are wrong, but the latter is generally considered moreso. Furthermore, statutory rape tends to have more exceptions when the victim is closer to the age of consent.
If we are going to use the term "rape" in an unqualified manner, then the usual connotation is "forcible rape". I think it is fair to object to the unqualified use of the term where the victim was appeared to be a willing individual above the age of consent.
It's a bit like calling Martin Luther King Jr. a "criminal". Yes, he was put in jail, and technically he did violate local law, but the activity he was engaged in (non-violent protest of unjust laws) hardly fits the expected model of what is typically implied by the word "criminal".[1]
Now I bring this up not in order to compare the character of either Minsky or Stallman with MLK, but merely draw attention to a fallacy of reasoning known as the non-central fallacy[2].
An edge case in the manner of statutory rape (where the victim seemed to be willing and of age, and was in fact close to the age of consent) is still likely illegal and wrong, but we should still take care to note how such a case differs from a more central example of forcible rape.
> It's not clear what you are referring to here. I'm not much impressed by someone later saying that they changed their mind a long time ago (if you have a reference to RMS saying that - I don't). Grossly wrong public statements should be publicly retracted. If they're not retracted, then they're fair game for criticism.
My understanding is that he did make a public retraction of sorts this month. It's still an open question as to when he thinks the age of consent is, but I do believe he thinks there at least is one. Despite the timing of his retraction, I do think he was sincere.
[1] You've mentioned elsewhere that you are English, so I don't know how salient the example is to you. I hope it makes sense.
[2]https://www.lesswrong.com/posts/yCWPkLi8wJvewPbEp/the-noncen...