>>15699186I get what you're saying, but to me it feels like the good NPCs are friendlier and the evil NPCs are meaner. Barring N, there's not really much mixture.
The older games had characters like Blue, Koga, Silver, and Claire who weren't evil, but they were pretty dickish towards you or had a mean streak. On the other hand, Giovanni was evil but he was pretty polite towards you, to the point where you inspire him to reform.
Now a days, it's more polarized. All the gym leaders are helpful and nice, your rivals are nice, while the villains are even more evil, with Ghetsis outright trying to kill you. At least X/Y kind of broke from that trend with Malva, who hates your guts but keeps you around because you're fun to battle.