I suspect that the person from the "more nuanced pessimism" ask meant "what constitutes a view of pessimism more nuanced than a generic idea/portrayal of it, e.g. the typical "I'm so dark and deep my middle name is Philosophy One-Oh-Nietzsche" teen character." Could be wrong though!
Possibly! I think they may actually have been referring to something I previously said about shows that I felt expressed a kind of childish pessimism, but I don't remember the actual situation.