I mean yes there are aspects of a story that are objectively judgable but there are aspects that depend on how people perceive things individually as better or worse, like sentiments of charcters, their decisions, choices.
Ig its all based on each ones rationality, that's why have you have concensuses and majorities. Everyone can perceive a choice a charcter makes and come to the similar conclusions but still have differences over it.
Ultimately what and how you think of things depends on what seems reasonable to you, and that can be subjective as you may not be reasoning well or you may have moral problems with it.
If you don't mind i'd like an example to your claim that a story can be i belive holistically objectively judged or judged regardless of they logical technical elements.