Samsung is just an aggressive marketing company that wants to take over the world. The business model is 'take on Apple and put them out of business'. Others have tried:
It is a very old marketing tactic in computing going back to the 1890s, when Patterson of NCR would black the names of competitive cash registers with FUD. Patterson went to gaol. Thomas Watson worked for Patterson and learnt the tactics and applied them at IBM, but was a little more careful.
Apple explained why they were doing this in the keynote. 1) people already have enough chargers, they just become waste. 2) the packaging for iPhone is smaller, so you get more in a shipment, saving on fuel and shipment costs.
That is great thinking. Most marketing people want their packaging to look big on shelves. Even buying a packet of chips – pumped up with gas to make it look big. Open it and you find it is only 1/3 full. That means you need 3 times the number of trucks to deliver than product. Apple have taken a step to break that wasteful model.