I'll be honest and say that I completely blasted through the game since I REALLY wasn't feeling it, but I don't remember ever running into anyone who was like a dick to their Pokemon or to you. It was always Hau or the girl showing up and they were pretty straight forward friend characters. The main villains were super jokey too, it was a major turn off.
I think it's funny people saying this game looks like it's "baby's first Pokemon" because that's what I thought of Sun/moon. The games were so linear it wasn't even funny, zero exploration. At least Yellow has stuff like mt. Moon or victory road that is kind of like a dungeon, every area in sun/moon was a series of straight narrow paths that occasionally had an off-shoot that led to another item. You could legit get lost in some areas in the original games, it was impossible too in SM.