You're getting updates for PCs over 10 years old because thanks to the way IBM PC clones work, the OS kernel can be independently updated from the drivers of the peripherals, not tied to them as it is in the ARM ecosystem with obscure FW blobs that are tied to the interfaces of a particular Android/Linux version.
On Widows at least, drivers from the Windows Vista days still work just fine on Windows 11 as the ABI hasn't changed that much since then. Good luck with that on Android.
On Widows at least, drivers from the Windows Vista days still work just fine on Windows 11 as the ABI hasn't changed that much since then. Good luck with that on Android.