I think, personally, what makes a good story good is - among other things - the right amount of conflict. Change isn't always conflict, by the way. Other things than conflict contribute to growth and development than mere conflict. Too much conflict makes a story uninteresting in my opinion and lead to stagnation just as much as not enough conflict. Conflict doesn't lead to change, it's not sufficient for change, it merely contributes to character growth and development.
But, even if conflict is necessary for a good story, it might just not be what the writer/reader of the story really finds interesting about it. I don't see how it could not be a valid answer to "What do you find interesting about this story?" if one says "I don't find the conflict to be what is interesting about the story, even though it's an integral part of it, but...".
It's kind of thought-policing if one prescribes what has to be the interesting part of all and every stories.