I've seen a few people mention this and wanted to address it real quick from my POV:
First of all there is no ride there right now. We lost a ride and it wasn't even a good one.
Just because the technical ride count wouldn't be increasing doesn't mean the park isn't getting better in this. If Encanto happens and is a D or E, that's far better ride quality than when Primeval Whirl was there. I would also say if Indy is essentially a DL clone, that's an upgrade over Dinosaur.
Complaining because it's not an expansion to me is like complaining that we aren't getting a fifth park. Would an expansion be nice? Sure. But dinoland would still be a mess. You need to fix what you have before you can think about expansion imo. By fixing the Dinoland plot and putting a new show in Tree Of Life, they will have made changes within the past lets say 10 years to pretty much the whole park and the only thing left to do at DAK is expand after they finally get the Dinoland area sorted out.
So expansion is inevitable at DAK going forward, but tbh Dinoland is a part of the park I almost never visit so if this is a new area that has really nice theming and good rides, then yes, I will consider it an expansion even if it technically isn't one because there would be more things in the park that I actually care about.