I don’t think that if someone rejects the rationality of trading off neutrality for a combination of happiness and suffering, they need to explain every case of this. (Analogously, the fact that people often do things for reasons other than maximizing pleasure and minimizing pain isn’t an argument against ethical hedonism, just psychological hedonism.) Some trades might just be frankly irrational or mistaken, and one can point to biases that lead to such behavior.
I don’t think that if someone rejects the rationality of trading off neutrality for a combination of happiness and suffering, they need to explain every case of this. (Analogously, the fact that people often do things for reasons other than maximizing pleasure and minimizing pain isn’t an argument against ethical hedonism, just psychological hedonism.) Some trades might just be frankly irrational or mistaken, and one can point to biases that lead to such behavior.