This goes along with my comment earlier, Disney designed a program, and implemented policies, that made DAS ripe for soft abuse (for lack of a better word), whether your condition prevented waiting in a 10 minute line or a 45 minute line the advise was the same… use DAS and do other things while you wait. While it wasn’t outright abuse it lead to unsustainable overuse, and that’s why we are where we are now.
Had Disney changed their policies to limit use to specific line lengths, to a certain number of rides a day, to 1 use per ride, to a certain group size, etc they probably could have salvaged DAS, instead they just eliminated it and now those who genuinely needed it are left with nothing.