Art is meant to be subjective, otherwise you'd be making commodities. I don't think it is even possible to have subjectivity overly celebrated, because that is what makes the arts arts.
As for foundational skills such as ballet and pencil-sketching, they are essentially building potential for subjectivity. Once again, no one cares if you can stretch your legs 180 degrees or draw a cone on a sphere, unless your legs are built different or your pencil strokes are different.
However, in a sense, chasing for originality way too early before a solid foundation is built may result in a half-assed work style, which is not what you would want.