Oh, I hear you. One of my favorite dub-con fics isn't labeled as such at all. It's a surprisingly dark story about high school and roles and the characters are so very confused about what they're doing that all they can really agree on is that it's fucked up. And one of the boys is only in this rather twisted sexual relationship because he doesn't really see any other choice and goes along with it, especially in the beginning. I can definitely see it being a trigger for some just as it's a kink for me and each time I think to rec it, I end up debating over whether to inform the person I'm reccing it to about the rather dubious consent because the author doesn't warn for it herself.