I haven’t thought about it in a while but the premise of the article rings true. Desktops are overall disposable. Gpu generations are only really significant with new cpu generations. CPUs are the same with real performance needed a new chipset and motherboard. At that point you are replacing the whole system.
Is there a platform that challenges that trend?
Disposable my ass. I just did the final upgrades to my AM4 platform to be my main rig for the next 5 years. After that it will get a storage upgrade and become a NAS and do other server stuff. This computer 7 years in has another 15 left in it.