I don't see there's a difference. Say they lowered the speed limit, making driving at current top speed illegal. You could say that speed's not illegal, it just needs modifying, but that would seem a strange point to make.
I think that's a strange way of arguing actually, you would say the speed is illegal and the car and driver behavior just needs modifying. Google analytics would by analogy be closer to a car that can go a certain speed.
But the question is if the law says that any car that can go that speed is no longer street legal, then it is a problem because it is probably difficult to modify the car. Just as there are structural issues about Google Analytics where GDPR is concerned that makes altering it really difficult if not impossible, and if you can't fix GA to make it legal it is de facto illegal.
better analogy is if they decreased the weight limit of vehicles your license allows you to drive, you could say your suv hasn’t become illegal, it just needs modifying (that is, changing the bodywork & the wheels)
