"only Apple has the capability of rolling out this system"
Right. Exactly. Any country in the world can mandate that Apple do anything they want (any of the slippery slope mandates), and Apple can comply or withdraw from the market. If any country wanted to demand that Apple compare all files against a ban list, they could have done that in 2007, or any year since. There is zero technical barrier and it would be a trivial task.
The point is that this development moves the bar infinitesimally. I would argue not at all. Fearmongering that depends upon "Well what if..." didn't actually think it through very well.