A related idea is that of perspective. Creating something often requires picking between multiple options, and to do that successfully the creator must keep in mind their goals (evoking an emotion, telling a particular story, conveying an idea, etc) along with the desires of their target audience. The creator's goals and their intended audience forms the perspective that they view decisions from.
Critiquing something involves choosing a particular perspective (our own, the creator's, or the target audience's), and which one we choose is based on the subjective value we give each perspective. When we describe a creation as bad we must remember that it is bad relative to our chosen perspective.
For example: imagine a funeral scene that has a soundtrack playing that would be considered happy by its target audience.
* From the creator's perspective they wanted a sad and solemn scene; which, makes the soundtrack an objectively bad choice.
* The target audience in general regards it as one of the funniest and best scenes.
* We find the scene too funny to be sad and too sad to be funny.
All of these perspectives are correct relative to themselves, and which one you choose to let color your view of a creation is a personal opinion.