Yes, you should know, you created the issue by telling people to pull the wiper arm off using no tool and damaging the arm connecting mechanism.There is an issue I've read about involving the mechanism beneath...not the motor itself, but the connections between the arms.
More likely, don't you think, that damage happens because of someone using the wipers when they're frozen to the windshield. Besides, if you can do something by hand, you're far less likely to damage anything than if you have a tool insulating you from feeling what's going on.Yes, you should know, you created the issue by telling people to pull the wiper arm off using no tool and damaging the arm connecting mechanism.