>>41298565People can take quality getting worse over time.
But seriously, the games have always seemed to emphasize the bond with your pokemon.
ORAS had an item given to you if you transferred a pokemon from gen 3 all the way to gen 6.
Gen 7 also emphasized it, dialogue throughout the game mentioning the first pokemon in your party, only for them to go in a different direction in the next games.
And for what? It would have made sense if the game's quality went UP after cutting over half of the pokemon out of the game.
Instead we got this clearly unfinished game that was released early to meet the Christmas present deadline.