I don't dispute the concept of planned obsolescence — or even fraudulent sabotage. (Looking at you, Logitech, with the 7 mouse devices we bought which (while otherwise excellent) lasted between 14 and 17 months with a 12 month warranty!)

But my point is that it's not relevant to computer/smartphone oriented wireless headphones. Most of us are gonna want new ones within 3-4 years regardless of what Apple plans. (Wired headphones, different story.)