>>52602005>last minute additions so they had less effort put into themThis is gigatard headcanon.
They almost certainly just swapped the mushroom&magikarp from dlc&base game releases late in development so that the Karp hinted in PLA could arrive with the update that enables PLA evos in SV.
They outsource Pokémon model creation and everything we'll get in Gen. IX has been modeled for at least a year and passed concept clearance years ago. Realistically the Karp line was ready for PLA but held back specifically for SV update promo shit.