>>39348631Probably a load of BS, not only are all the models and animations clearly recycled from previous installments but even if they did have to start from scratch all the kanto pokemon along with their megas and alolan forms were already done on the switch and if it was true they could keep making the new models and code them in later as DLC. They probably just made that up to try and save face with the fans.
Real reason they want to delete the national dex is so they can focus more attention on shillmons and reuse design aspects of older mons instead of creating new interesting ones.