>>55658046>The way anime Pokeballs operate for examples, directly contradicts the natural shrinking ability.The anime isn't really a good example because you have to remember that it's a cartoon for toddlers that needs to adhere to a budget and has been airing almost nonstop on a weekly basis since its debut, only stopping for national tragedies or other circumstances out of Pokemon's control.
The reason why Pokemon in the anime are depicted as being sucked up/spat out by turning into red light is entirely for budget reasons, with how often Pokemon are sent out or recalled that it would be agonizing on the budget to constantly animate them shrinking/expanding out of the ball.
Despite this, however, there are a few instances where you see the Pokemon quite literally shrunk down and residing within a Poke Ball, and if you read the Zukan as well as Adventures you'd understand that this isn't a "silly cartoon moment" but a very literal depiction of how a Poke Ball works.