It would definitely work better with an actual withdrawal from currency. It's weird to have individual businesses having to decide when and how to handle the slow disappearance of coins.

But then, there's a lot weird about American currency to me. Like I have heard that repeated attempts to introduce a $1 coin "didn't catch on". In Australia it was pretty simple - they took away all the $1 notes, they made a gazillion $1 coins. It wasn't optional. There wasn't any question of "catching on", it was just...this is what we do now.