I'm solidly against RMS's push to go about saying GNU-slash-Linux all the time -- especially when the actual portion of GNU in the system varies significantly, as in busybox-dominated Maemo.

But it's posts like yours that make me reconsider. At some level, words used too broadly suffer a dilution of meaning -- apparently to the point where people use it to replace a pre-existing word which fits their meaning precisely. Maybe I've been part of the problem (if so, I apologise) -- or maybe you'd just say "Android != GNU/Linux; Maemo = GNU/Linux" anyway, and spend more syllables being, if not quite equally wrong, equally missing the point.

BTW, the word you're looking for is UNIX (or if one wishes to kowtow before the trademark lords, "*n*x", "a unix-like system", or similar) -- and, once that substitution is made, I agree completely.