I don't think you have to be paraplegic to have a condition that prevents you from enjoying an invigorating hike. If this gets more people who aren't in perfect health out and exercising, what an incredible win.
One of the positive results of having the option to engage mechanical assistance is pushing myself beyond what I thought I am capable of, and surprising myself by not needing the assistance at any point. It improves the safety of pushing the envelope, for example I'm not going to risk attempting 30 miles if I think my limit is 20 miles unless I have a way to safely return if I can't do so under my own muscle-power