This is like saying combustion engines are immensely complex machines when your car suddenly loses power on the highway for no apparent reason and then when you restart the engine it works for another five minutes again. When you drive on normal roads it works flawlessly. It must be the engine, right? After all, it is the most complicated aspect!
Except in reality it is far more likely for it to be a problem in the electronics driving the fuel pump or spark plug.
AMD most likely has some sort of buffer overflow or deadlock in their GPU drivers that is causing difficult to diagnose problems. It is very unlikely that the silicon itself is broken when it works fine for playing video games and it also works fine when your GPU is one of the few officially supported by ROCm.
