It was probably a cascade of people but the question is whether we all realize Apple was right or if they just implemented it wrong or if it will just take a year or two to get things dialed in (but still prepared for an AR/VR world) and then we forget it ever happened.
It's a leadership failure. They obviously have a UI/UX dept. Those people want to be considered productive. Hence, they need to force a major redesign every now and then. Without a Steve Jobs like leader, those things will happen due to fundamental laws of corporate bureaucracy.
Most people have forgotten Antennagate or the iPhone 4 fiasco. You're probably correct that people won't remember this in 2028
People had the same reaction to iOS 7. They cleaned up some of the excesses over the next few years, and now the same basic concept is what people want Apple to RETURN to. They'll be fine.