>>37415292You'd be fine without it, but if I had to make an argument...
Seeing the Z-Moves animated is nice considering their in-game animations left something to be desired. Even though the artstyle's something I like less than XY, there's still some nice sakuga moments and there's fewer animation errors as a result. Also, nobody knows for sure what Ash's complete team is going to be since we've encountered basically every alolan pokemon without getting a full team.
Doesn't stop them from recycling Z-Move animations though. Also if you like Eevee goddamn, you're sure going to get your fill of that.