score:7
Like xngtng, I had always thought that turning on your hazard lights was permitted when you're driving significantly slower than the speed limit because of weather conditions or your car is breaking down or running out of gas. Or you've stopped somewhere like a no parking/stopping zone or just on a street briefly to do something like answer your phone or look up directions. I learned to drive in Ohio and then lived in California for many years.
I found an article from 2016 in the Atlanta Journal-Constitution newspaper that lists what's permitted in each state. Note: Information may have changed since 2016. I'll excerpt the Minnesota statement.
Minnesota: Hazard lights are not permitted while driving except to indicate a traffic hazard.
Most states have the same requirement--not permitted except for a traffic hazard. What exactly constitutes a 'traffic hazard' is another question.