Princess Tutu is also explicitly not supposed to be about perfect fairy tale endings. It’s about subverting them.
The “bad” girl isn’t unworthy of love and isn’t thrown away and condemned. She isn’t unworthy of the prince. Nor is the prince obligated to love someone he barely knew.
The “good” girl’s ultimate happy ending isn’t being in a perfect fairy tale marriage, but instead it’s accepting her true self which is NOT a princess, but is still incredibly valuable and worthy of love AND OH, SHE SAVES EVERYONE.
Her happy ending is to see her friends be happy, and have the dude who, y’know, actually knows her as she really is and is still devoted to her, content to stay by her side for the rest of their lives whether he gets to bang her or not.
THE WHOLE POINT OF PRINCESS TUTU IS A PERFECT FAIRYTALE ENDING ISN’T THE BE-ALL END-ALL, THAT EVEN WOMEN WHO DON’T FIT INTO THE GOOD GIRL MOLD ARE WORTHY OF LOVE AND UNDERSTANDING, THAT WOMEN DON’T HAVE TO BE PITTED AGAINST EACH OTHER, THAT THERE IS HAPPINESS IN ACCEPTING WHO YOU REALLY ARE AND PEOPLE WHO ACTUALLY KNOW EACH OTHER AND ACCEPT EACH OTHERS FAULTS SHOULD BE THE ONES WHO ACTUALLY END UP TOGETHER. THAT CHARACTERS RECLAIMING THEIR AGENCY IS MORE IMPORTANT THAN FOLLOWING SOME BY-THE-NUMBERS ENDING.