>>58746894Omanyte's Pokedex in the Crown Tundra literally points out how it's an invasive pest due to excessive numbers from escaped or released specimens, and Lapras's Alola dex entries point out how there's too many damn Lapras from conservation efforts that it's hurting the ecosystem due to how many fish they all need to eat.
Researchers might be smart, but the whims of idiot trainers who don't understand the nuances of the ecosystem and are mass breeding these mons aren't accounted for.