Oh but they do, and the mass confusion that'll uprise when iOS 19, 20 ... 25, macOS 16, 17 ... 25, watchOS 12, 13 ... 25, and visionOS 3, 4 ... 25 all just vanish overnight will just be a very easily avoidable problem. You have to remember millions of different people use these things.
There's no clear indication these things are named off the year. When I first read the headline with this rumour I had no idea it was representative of the year. It just seemed like a random number. That'll be a problem.
Several generations of each Apple device line will sound like they have been supported for a different length of time longer than others. iPhone 8: iOS 11 - 16. iPhone 11: iOS 13 - 26? How on earth was the Apple Watch Series 5 supported for 5 years from watchOS 6 to 10 where the Series 6 lasted 20 years from watchOS 7 to 26?
People who use a single Apple device will also have no idea why their software update is telling them to update to a version from ten years in the future.
This is such a bad idea on so many levels and I hope Gurman is the idiot here, not Apple.