No it doesn't - it won't work for the new user.Maybe I’m missing something but what I see is they are charging money to bring extra functionality to an AVR. When you sell that AVR the functionality goes with that AVR.
Well, unless they're happy with the calibration for your old room, and aren't intending to run their own.
(At least this is what I'm assuming when they say per-user. With Audyssey Pro, you have to regenerate keys online from your installer account for one of your licensed AVRs. With that system I suppose the new owner could get in touch with the old owner to ask them to ask Audyssey for a new key whenever necessary. They last a month. This might be tricker though.)