>>57141791And this wasn't even new information, either. It's been present since the very start, a key component of the worldbuilding, a detail that the Zukan went into to explain how the Poke Ball was first conceived, and the shrinking phenomenon was depicted in many other supplementary media, even depicted literally in the games themselves. It's just that no one outside of Japan thought it was literal, and because the anime had to save on its budget, it disregarded the idea of animating all the Pokemon shrinking to instead have them spawn from beams of red energy, any instances were simply taken as cartoony abstraction rather than literal depiction.
Laventon did nothing. He was just the very first time someone had no choice but to localize this fact correctly.