Sorry but that's just [censored]
If some arts demonstration is all acrobatics and showmanship do you really think they train for the opposite? That's just a ridiculous notion that only someone feeling offended would say.
In my school there is a demo team and a team for competitions (forms and sparing)they happen to be the same team. It depends on the school. In the best schools, both the "art part" and the practical part are both stressed equally.