Earlier quoted context omitted.
Even without the legality, it is super weird. If someone told me I was old at 30 I would laugh :)
My spouse is a dancer. They generally retire at around 30 yrs. old. (And by retire, I mean find a different job because you aren't going to retire on a dancer's salary.)
It's amazing if you can even live as a dancer. Usually, there's a second job. (I worked in CS in parallel to the dance thing. And at some point looked at the pay checks :)