I'm not talking about movies where the outright villain has a point, that's quite common and often intentional. More like if the hero has an annoying sidekick who keeps insisting they shouldn't do something...but doing that thing would be stupid. Just someone who you're supposed to side against but if you think about it don't or have some reaction of "This guy is kind of an asshole but he's not wrong."
So the movie that I always thought of this for was 1408. Samuel L. Jackson has a much more extended role than it needs to be (probably to use him more in promotion) as the manager of the hotel that has the evil room in it. Some of the marketing even kind of implied that he was the villain or evil in some way. But all he does is be really persistent in trying to convince John Cusack's character from not staying in the evil room...and he's not wrong obviously. Like the worst thing you can say about him is that his motives are a bit selfish and he's mostly concerned with the hotel's reputation, but what he wants is better for both the hotel and Cusack. And the worst thing he does is maybe try to outright bribe Cusack from staying there? But that's maybe just a little shady, but it's not even illegal in this context. You only get annoyed with him because if Cusack doesn't stay in the room the movie can't happen, but it makes more sense to not stay there.