Its not evil, its just pragmatic.
By the time you get to be a senior I'm sure we'll be moving beyond Smart Phones anyways. So it won't be an issue.
And I'm sure that makes you an all-star to your family. Just like I'm sure there are many family members out there doing the same thing for all their non-tech savvy family.
Disney is a business, it doesn't do things in a vacuum. The entire world is moving in this direction, so Disney has to move with it.
It's evil when you say "Luckily" as you did. You feel lucky that people that aren't on your same technical level are dying.
I don't know if Disney is making the right choice though in how they use technology. So far its a battery draining app that is unreliable with a bad UI. In many cases it requires unnecessary usage of a phone for no benefit.
Having tickets, wait times, photos, and reservations on a phone is a great use of the technology. Some stuff like mobile order or mobile checkout is a good idea but is poor in execution, especially when they reduce staff as a result of it.
I had better experiences in quick service restaurants pre mobile order.
Genie+ IMO requires too much using and refreshing of your phone to make plans.
Dining Reservations are so bad and unreliable with the app that many sites offer paid services to help you get a reservation.
The park reservation system at this point is complicated for old timers and is used by the company to understaff as much as possible, and the guest experience is still miserable. I don't see the benefit.
As the "planner" when I go with family or with my wife I have to be the one always on my phone. It usually dies by 4pm and we need to switch to someone else's.
The phone only tickets is terrible for this alone. How are they going to help you out if your phone dies? Will they keep a database of every name and ticket holder that entered the park each day?
Even if they did there would be strict privacy rules for how to securely store and access that information.
What if your relatives phone tries to send you an authentication code to your dead phone to log in?
It just is asking for trouble in my opinion.
Disney isn't trying to move with technology as much as they are trying to aggressively find ways to cost cut, be it in staffing or printing tickets. I don't see either being beneficial to the guest experience.