Do You Know How to Manage the Risk of Zero Confirmation?

Green was one of the first ones to implement opt in rbf and at the beginning it was a checkbox on every transaction which you could default to your preference. People were often confused about this like why wouldn't I always have one ability to replace them, he says. The only users that get hit by this is basically what Luke Dasztunier calls discrimination of optin or BF with some merchants who will not treat you the same so  I think they should always wait for one confirmation to deliver you the goods.