Adding capacity with new E-ticket attractions makes crowding worse, not better. You add a new attraction that increases capacity by 8,000 per day, and you end up with 12,000 new people showing up to ride it. And Disney fans think EVERYTHING is an E-ticket.
Disney didn't need to absorb more guests, they needed to redistribute the current slate of guests away from Magic Kingdom and away from Fantasyland in particular. That's where the crowds are. So you get Toy Story Land, Pandora, Galaxy's Edge, Runaway Railway, Rat, and Guardians in relatively quick succession. That's not a light slate, that's a ton of new stuff designed to draw people out of MK.
Adding an E-ticket to Magic Kingdom is the worst possible thing they could have done. They STILL can't properly absorb the line that forms at Mine Train, and that's a crap ride that opened 10 years ago.