Look at how much cleaner parks and drains get after these bans start. It cuts down on trash that costs millions to clean up every year. That's a direct effect, not just us being smug.
When @aliceharris said 'swapping one problem for another', it hit on a bigger pattern I see all the time. So many green fixes, from bags to cars, just move the environmental cost somewhere else. We never get a perfect answer, just less bad choices.