You can put an objective value on all those things you perceive as subjective. What an individual values is subjective, however.
If you perceive 'art' as the expression of self then how could Beyonce be considered an 'artist' as her art is borrowed from, created by, directed by and choreographed by other people to varying degrees. That is all I mean by saying what she does is artistically reductive, as opposed to someone like Hozier (not that I'm a fan especially) whose songs are to a much greater degree his own vision.
Again that sounds limiting and disabling of the part she does play. Just because she doesn't do it all doesn't mean her art is borrowed or reductive.
She does a large part of her choreography, she does do parts of the editing and directing of videos. She has a lot more control and creative expression than people realise, in the past when she was managed by her father a lot of that was stifled and this wasn't the case.
But in more recent years, that's completely changed. She works with a live band, and a group of dancers. She picks certain visualists, poets & actors who fit into the vision she's trying to create.
With regards to this particular visual album - the 'art' is an expression of both herself, her mother & women as a whole. And to achieve this it uses 'art' from other creatives, that all together form into one piece. Hence why you can't limit art, because you aren't always producing art purely for self.
The point is, she is largely talented, and does delve into other areas - her label don't get her to sing and perform something which they've pre-packaged for her.
But that's the image that's associated with her, and it couldn't be further from the truth.
No she's not an actor, director, editor, song writer, singer, dancer, choreographer, live musician and more.
But most people don't actually know how much she does behind the scene, it's just the narrative that she's a pop star who doesn't write her own songs. Therefore it's easy to dismiss her and anything she does straight away.