This result could change physics forever

You can conceive of an electron that orbits its own magnetic field if it follows a twisting infinity pattern.  I have always wondered if a muon was something like this, or if it was more like two electrons orbiting a positron oscillating along the axis. In any case, a muon is not as fundamental as an electron, and there is no reason to think it should have a g-factor anywhere near as easy to model as an electron's to get high precision estimates.