These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Madame Butterfly
Fair for Its Day: Nowadays, the play gets criticism for codifying the stereotype of Asian women as fragile and nothing without their Western men, but in its time it was meant to condemn the cruelty of the West towards the East via making Butterfly a victim of Pinkerton's thoughtlessness and jerk assery.
What an Idiot: People who are less receptive to Butterfly's woobieness (and even some who are) believe that while Pinkerton is a massive ass, Butterfly shouldn't be left off the hook. She is given warnings, help offers and/or useful advice by Suzuki, Gorou and even Sharpless... but she refuses all of this and chooses to wait for Pinkerton's return, still blindly believing that he'd come back to her. As you can see, it backfires massively on both her and her child, and even if she's NOT responsible for Pinkerton's actions she is responsible for her own.
Pinkerton is just as stupid, if not even more. Ever since the start he's warned by the Genre Savvy Sharpless that this Japanese girl has taken the vow he takes for granted very seriously, and spends the whole first act telling him not to be a jackass and to take Butterfly's feelings in consideration. He refuses to take Sharpless seriously and insists that he won't give her the time of the day after the first month, then takes off to America and acts almost as if Butterfly didn't exist. Of course she turns out to be THE Japanese woman who would take his "promise" seriously.