Earlier quoted context omitted.
It doesn't suggest that age shouldn't be considered. It says the difference between 17 and 18 years old is minor. The justification is that depending on which country or even state within a country you're in you could be committing "rape" in one and not committing any crime in another. As rape is a word most people understand as awful violent crime it is absurd for it to depend on details like exact location where it…
There has to be an age of consent. Sex without consent is rape. I don't see the problem. Different countries have slightly different definitions of pretty much every crime in the book. Whether or not you are committing fraud, burglary, assault, etc. etc., will also depend on a number of "minor details" that may vary between jurisdictions. Either RMS thinks there should be an age of consent, in which case it's obvious…
Just because it's called statutory rape in US law doesn't mean it's a serious crime in all cases and shouldn't be called in a way to suggest that. That's the point Stallman makes and imo it's the obvious one.