I'd go even further: ALL professional art and artistic endeavors must legally go through a hard reset. Everything goes back to the late Stone Age, and we work back from there and try to figure out where it all went wrong.
Oh, you're an "artist"? Great, how wonderful. No more making pretentious performance pieces or retarded movies about gay black Vikings, though. Artists will be restricted, on pain of death, to the following:
1. Cave Painting. All visual art will reset to cave painting. You make your own paints and colors from naturally occurring materials using your bare hands, then find a deep cave and paint by torch light (you also have to make the fire yourself). The only acceptable topics for your cave painting will be: animals you personally killed for food with a hand-crafted spear, noble depictions of your culture's fertility goddess/war god, or an abstract piece that came to you after eating wild mushrooms (no using the internet to see beforehand if the mushrooms will make you trip balls or kill you - take the risk for your art).
2. Bone Flutes. All music will reset to the bone flute. You make your own flute from the leg bone of the major fauna in your area. Same rules as cave painting apply: you kill the animal with a weapon you made from scratch using local materials, craft the bone flute from hand, and perform a musical composition of your own devising celebrating your role in the eternal circle of life and death. If no major fauna live in your area, you may use the bones of other competing local musicians after challenging them to duel to the death - like a modern-day rap battle, except that there is always a battle to the death instead of just most of the time.
3. Fireside Slapstick. All performance art - film and television acting, theater, stand-up comedy, etc. - will reset to fireside slapstick humor. Science tells us that performing slapstick routines around the fire while the tribe feasts is likely the oldest form of performance and that it is seen in ancient cultures worldwide. You - either alone or with a friend - must attempt to amuse your friends, family, and neighbors by risking your health and dignity via a series of pratfalls, stunts, and other demeaning acts. The audience will be required to throw things at you as part of the show.
I figure after about 20 years of this, we will winnow down the field of arts and entertainment professionals enough to discuss reintroducing other forms of art, music, and theater - slowly building back up to see if they can do a better job this time.