There is no such thing as an Agile Transformation, Digital Transformation, DevOps Transformation, or any of the Whatever Transformation that you can think of or have been sold. You can’t buy agility, and you certainly can’t install it. There is no end state, no optimal outcome, No best practices. We are no longer factory workers.
To my understanding there is a frustrating misunderstanding of reality when one thinks that the Product Owner can reject a single story at the Sprint Review. This is the fallacy of the rejected backlog item.