That's the convenient line of blind apathy they rely on, to sell iPhones. If people cared, they would object to owning an iPhone just from the material and labor cost of it... but they don't. It's a running joke that nobody cares what next year's iPhone looks like as long as the trade-in value is good. Apple couldn't kill their brand if they tried, past this point. People don't pay attention anyways.

Which is why it's good for us to demand more from capable companies. Apple looks good when they're scared, and the market wins when they're forced to compete in novel and interesting ways. Success breeds complacency, the rest is distant history.