A lot of people don’t understand… it’s not that the elevators are slow, it’s that there’s so few of them. PP has half the rooms as DLH but maybe 1/5 the total elevators, for comparison. That said, the number of elevators is really no different than what you’ll find at many buildings around the world… but if your travel experience is largely Disney; it’ll be different. To compensate, Disney installed smart elevator (you push the button if your floor and it assigns an elevator) but a lot of people aren’t comfortable with it.
To be clear… the only times you’ll typically wait for an elevator is rush periods. Check in/ out times, breakfast/ park departure, park return, etc. at its worst you may wait an extra few minutes… it’s really a non issue.