I don't care. I was rather amused when I found out about it, but wasn't sure if that was permissible from the university standpoint. The person has a website on the other business and a prominent bio. So it's obvious that she is not hiding it from anyone. I'd consider the option if I have a skilled hobby.
But my question is... why do you care? If you know about the person's other job, chances are they're not making any effort to hide it. Do you feel that it's interfering with their work in some way?