Earlier quoted context omitted.
The manufacturers do not have the problem. They created a problem for many users as a side effect of forced obsolescence making consumers in richer countries buy new hardware every few years. So it is not really "self created" in my book.
Didn't Google create the problem. They could have made the Android core updatable without the need for a manufacturer update
The continuing problem with Android, and a display of Google's lost interest in Android, is that they still stick to this paradigm in 2024. Nowadays phone manufacturers ship stock Android with add-ons, and cellular companies no longer have the power to demand anything. If Apple can ship iOS 18 worldwide next Monday, why can't Google?