And if you walked around a large city with glasses of wastewater trying to tell people it was just as good as regular tap water or try to say what you are saying you wouldn't get a single person to take a sip all afternoon. You need to change people's perception before you will get any meaningful dialogue.

People perceive it as nasty. That's just how it currently is. Calling people childish isn't going to change any minds or do anything positive. It's just going to make people double down and possibly tell you to "Go F*** Yourself".