Gymnastics and figure skating are about the only sports I can think of that are based on a judges score.
Where's the line between gymnasts and circus acrobats, many started out as gymnasts, likewise where is the line between competion skaters and performance Disney on Ice etc.
But if you argue gymastics and figure skating are sports then so is Cheer.
But if Cheer is a sport, does that also make street dance, ballet, highland and irish dance a sports too?
Break dance made it to the Olymipics.
Then think of all the various martial arts only judo is classed as an olympic sport.