The thing is I don't think the writers have the steam to do loads and loads of good battles anymore. BW tried to be battle heavy all around but pretty much collapsed under its own weight. XY only really did top notch gym/rival battles, with the companions barely getting any full battles at all besides TR curb stomps. SM's battling was pretty lethargic outside a few odd good exceptions, its main draw being more character driven. One could even argue early seasons shown problems just the series were spread out further to distract from it (eg. AGs' lack of rivals for Ash and May's underwhelming contest battles). Even battling is a bit too much of a one track pony to choreograph in a fresh way endlessly.
Also it doesn't really look like they like having the girls battle anymore, not intensely anyway. They tend to sidle around them taking damage as much as possible, only ever being in curb stomps in their favour most of the time, there seems to also be some unwritten rule they can only officially get knocked out ONE TIME since XY, just SM utilised that one allowed moment of fallibility more tactically. There's no way a character can be a developed battler when the story insists they can only be on the giving end without becoming an invincible Sue.
The fact the writers are kind of drawing blanks with non-battler goals but still persisting with it, even having a whole series more primarily focused on it, only leaves me further convinced they want to dial down the number of battles, not fazing out completely but definitely moderating it so the show doesn't rely on it as much for storytelling. The main problem being they're clearly struggling to click something else with as good substance and mileage so far.