Id like to try them but when you are 24/7 and not a millionaire the cost per nappy is the primary consideration (assuming the are good enough of course!).
All I am saying is that you get all kinds of stories on here and this one has all the hallmarks of being either not true or missing a pile of relevant information that changes everything.
How we dress and act in public is part of the social contract that exists whether we like it or not. While it does vary from country to country and city to city, that social contract governs what is 'acceptable' rather than what is legal.