>>55762361Fanmade regional forms are easier to digest than fakemons for the average casual fan, because it's something familiar with a different type and a slightly tweaked design philosophy to match said type, which is what actual regional forms already do.
Fakemons have the inherent disadvantage of being wholly original and thus there's no familiarity to latch onto, so the average casual fan isn't likely to get attached unless those fakemons align with their tastes in creature design.