It just means you have a healthy mentality and morality. You know these things are unhealthy and predatory in real life, so you're able to comfortably explore and understand a fictional story. You're even able to think of yourself as a bad person ("genuinely mental") for consuming it, so I would say you're thinking about it critically too and you understand what parts of the story make it fucked up, which your brain takes as "uncomfortable, I should be ashamed".
It just shows you're growing as a person and you understand right from wrong, without attacking anybody and doing self-introspection. Isn't that the whole point of consuming literature? You should be proud of yourself :3
reading this manhwa made me realize the Targaryen's made me immune to ts in fiction and thats genuinely mentalT-T