He has been given authority by God to make shoes for the world. If you don't wear them, you will die. Even if you do decide to wear them, but then find out that they are not the divine footwear that you were promised when sold, you can't speak negatively of the shoes or the maker. You might get away with questioning the practicality and comfort of the shoes, but any doubting or criticizing of the shoe makers qualifications or divine appointment will see you cast barefoot into fiery Gehenna.
The man is a fool. I am surprised he doesn't refer to himself as the great potter, and we are his clay.