S/X drivers will, since they can't use the phone as a key anyway. And unlocking the car through the app is extremely slow and cumbersome compared to the app (IMO).
A lot of newer tech products seem intended to move us to a place where we don't need to carry separate wallets/keys alongside our phones. That's a reasonable goal.
Ok but the question isn't whether it's a good idea. The question is how much it harms tesla owners. It sounds like this might significantly disrupt people who only use their phone and I wouldn't be surprised if a decent number of people made that(poor) decision.
I'd bet that a good number of owners don't always carry them around though.