I think it is a spectrum and I think we all have our strengths and weaknesses and as we grow we learn to work with them.
It has been watching all the girls on my daughters team develop. They have had their own music since they were 6 & 7. Most of them are on their second choices. First time us Moms probably had a bigger say because they were so little and didn't really get it, and themselves. This go round all the girls were much more involved in picking. And they are all doing better routines because they truly picked it and are invested in it. So much better then the compulsory stuff.
And their music choices very much reflect who they are and you can just see them growing into it. And some of the girls are just way more artistically inclined then others.
For my daughter, I know there is some artistry in there. But she is very introverted and really doesn't like to sell herself. Yeah, odd, she can do a BWO on a beam or a powerful tumble run in front of 100s of people but if there is dancing while waiting for awards, not for her. She is not the cute or elegant music type. But she is getting better at selling her strong, dramatic music and she makes her moves count. But definitely a work in progress. She is not going to have the fanciest routine but she is growing. And I was doubtful there for a while.And
A couple of her team mates, you can just tell they were born to sell it. And there are some on the other side that try as they might won't ever get there.
So really it is all or some or none. Age, taught and natural talent.