I am a little unsure about where the disagreement is.
As far as I can tell, everyone agrees that (1) DAK needs more capacity. I think most would agree that (2) some of that capacity should be E tickets and some should be smaller scale. (3)The specific distribution is debated.
I think most would agree that (4) an Indiana Jones ride similar to the one at TDS or Disneyland will have longer waits than Dinosaur has.
(5) Although Dinosaur is not fully utilized all day long, it's ride capacity is fully utilized starting about 45 minutes after the park opens. (6) The total number of additional guests that will get to ride due to the extra demand will fill ride vehicles earlier in the morning, perhaps leading to an additional 300 total rides by the end of the day. (7) This is a small number compared to the total rides on Dinosaur in a day.
(8) It may be worth it to Disney if building the ride gives them a second opportunity to sell Lightning Lanes. (9) It may also sell more merchandise, but probably not a ton more merchandise, since Indiana Jones doesn't sell princess-levels of merchandise.
(10) Encanto may or may not be a ride. If it is a ride, (11) it would replace the lost capacity from Primeval Whirl. (12) Primeval Whirl was definitely underutilized when it was open. It rarely operated anywhere near full capacity. I feel like most times I went on it, literally half of the capacity wasn't even available, and it was still a walk on.