This post is nonsense. You don't understand just how bad the American healthcare system is. Of course a medical emergency is going to set you back, the difference is it won't destroy your finances for the rest of your life.
Maybe I don't, but saying 'I don't need to worry about the financial side of medical issues because I live in Europe' is nonsense too, especially when you have your own business.
It's an exaggeration, but the difference between getting a "winning" ticket in the freak accident lottery in Europe is worlds apart from the same thing happening in the US. In Europe you might lose your business. In the US you'll probably never get a chance to try again.