Less waste after iPhone users all have to throw away their cables and buy new ones, presumably?
I guess if I'm going to replace my phone I should do it soon while I can still use my existing cables with the new one.
This literally just created a mountain of e-waste. We turned a hypothetical "what about when they switch" into a forced reality.
...now, whether that's because it's that good of a connector or because we humans wipe ourselves out before we get around to inventing something better is another question altogether.