I hear it isn’t quite as popular outside of Blizzard controlled media.
I’m sure this was always the plan, without taking any consideration of how much the playerbase would like it or whether some would be disadvantaged by it in a major way. I think they were surprised to find disabled and impaired people weren’t willing to stop being disabled or impaired lazy, get with the program, git gud, and be inspired to do the hardest content in the game.