Transitions can always be messy and confusing, but there is a time for change. When cell phones first came out no one had chargers, so it was necessary to include one. Now most people buying a cell phone are getitng one to replace an old one, which usually used the same type of charger. There is no need to include a charger with every phone purchase. It helps reduce cost as well as electronic waste, which is what the EU market is mandating.
Back in the day when you bought a desktop computer it was expected to come with a mouse and keyboard, and way back in the day even came with a monitor. Now now one would expect a desktop to come with a monitor, and the comparatively negigible cost of a keyboard and mouse and abundance of perfectly usable ones from old systems hanging around can make getting a set with every purchase of a computer more of an annoynce than something to be expected.
If anything I could just see requiring Apple to put a clearly readable notice on the iPhone packaging and advertising letting people know that a charger is not included.