This is likely to be a fairly sizeable minority of the world who used to know how it all worked - and just cannot be bothered to learn the new rules.

I am not sure if that's a good or a bad thing - if grandpa is not online can be do video calls to the grandkids ?

People have been reacting this way since computers were first sold to the public: They bitched and moaned until the last possible moment, but they are all using word processors and have iphones now. There will be no exodus.