So they have cut pokemon so they can focus on better animations right? But they have rebuilt models from the ground up, for a reason I cant fully understand?

But can someone explain to me how they had time to create a walking and running animation for every single pokemon pre-swsh and just not bother to implement them? Like, thats around 1600 animations. So clearly they cant be that stressed a company if they can just disregard those. Can anyone explain the logic to me please. Im really struggling?