Maybe the “different franchises” thing was an exaggeration, but you can’t deny that overall Pokemon have gotten much less natural. Besides oddballs like Mr. Mime or Voltorb, first gen Pokemon looked like real creatures and now they’re like action figures.
I believe you’ll find I can deny anything that I think is untrue. We agree the style is different, but I would never have thought to describe it in terms of being more or less naturalistic; that varies from one design to another but I don’t think there’s an overall trend across generations. I honestly have no idea what “like action figures” even means in this context.