That's my theory. "these" humanoids are doing evil stuff.....not "all" humanoids of this type are evil.Yeah, I don't think WotC would have brought back the Caves of Chaos at this point without the changes made in the new Monster Manual to eliminate the idea that "these guys look funny, so it's OK to kill them."
Ideally, they will also make it clear that the inhabitants of the Caves of Chaos are actively malicious and dangerous and not just living their best lives, creating homemade crafts to sell on Fantasy Etsy (which is basically just the same as regular Etsy at this point).