>>49303497They will retcon megas, z-moves, gigantamax, make event exclusive moves unavailable later, regularly remove facilities, game modes and QoL changes that players like because of their weird autism about every game having to feel unique, cut existing moves and even pokemon from the games, something they once stated they would never do.
But they will not remove some of the legitimately superfluous features that only add extra work to their workload like this one. They will go out of their way to keep them around while never meaningfully expanding on them, leaving tons of these little vestigial details of the past that only serve you to remind they once decided to try something and dropped it one or two gens later, incomplete.
Gamefreak is such a bad developer it's honestly mind boggling. I used to have a milder opinion of them, attributing many of their mistakes and cut corners to TPC breathing down on their neck and forcing them to output yearly releases. But the more you read into their history, press releases and reasoning behind choices they made the more you realize how truly incompetent they are.