>>37748789First half of it is laziness and knowing that they can get away with just the absolute bare minimum features.
Second half of it is so they can rebrand it and sell it as a new feature.
You know how all the Gems aside from Normal went completely fucking MIA in Gen 6, only for Z-Moves to pop up a Generation later, which were a suspiciously similar concept, only now they have a 30-second animation tied to them?