The problem is that some people will poop in their drinking water if it’s convenient. And even those who love to put their sayings and slogans on signs in front of their house still will do the convenient thing versus the sustainable thing when it’s easier for them.
My issues with bans is that now I just have to buy more plastic. We used to use plastic bags for trash. Now I have to go and buy them instead. So my net plastic use has not changed. I don’t mind reusable bags. Heck, even going back to the mid 90s, we used to reuse regular plastic shopping bags because ShopRite (NJ grocery store chain) would give a 2c/bag credit for reuse.