Working Hard
Quite right the aircraft radio licence does not cover the GPS. At one point the RA said they would sell GPS licences for £5 to make the use of GPS legal! Never head of anyone with one!
The radio licence fee covers administration and costs for "protection" of frequency space; believe it or not the RA actually do a good job here, if you see how many people they apprehend every year.
As regards to jamming other protected frequencies, it would be an offence however, the military can usually get away with such things in isolated areas.
Why doesn't everyone monitor their GPS and see if it really is affected on the notamed dates. Chances are you will not observe anything. If you do, respond here and we can see how effective the jamming is or isn't.