>>29438808>>29438771>>29438749>>29438813>>29438838>>29438839I'll restate my point from earlier:
Logistically, it ONLY makes sense to give Sinnoh forms to Pokemon from Gens 5-7 since all of the Gen 1-3 mons were available in some form during Gen 4 -- and all of the Gen 4 Pokemon originate from Sinnoh!
And while Hawaii is a microclimate with high biodiversity (islands cause rapid evolution just by virtue of being islands), technically a microclimate is just any portion of a larger climate that is localized. You could argue that one tree in an entire park is a microclimate for all that it matters.
In other words, they could easily "science" away that Kalos, Alola, and Unova mons introduced to Sinnoh evolved into different variants once they reached the region. Like the examples posted earlier, why wouldn't something evolve differently once it hit, say, Mt. Coronet or the Great Marsh?
...my autism is flaring up. I'm out.