The modern Disney Parks have a myriad of problems and one of them is definitely the insistence that guests utilize apps, etc but not because of the absolute paranoia outlined here.
Am I getting old?
It was (obviously) previously possible to visit Disneyland without this sort of antics, so I don't think the problem lies with the author.
It's more like the author is demonstrating to what ends you need to go to maintain a modicum of privacy.