I think people are forgetting that AMD sales market share for two last quarters outsold Intel. What will happen if AMD brings higher performance in APUs, than Intel? What will happen when AMD will bring HBM2 APUs to market?
Hiring Raja is answer to this. Intel has highest installed base of GPUs, that are extremely weak, all things considered. AMD has higher performance here, and this is really important selling point in the long run. Do not forget about this.
Did AMD lost talent? Yes, they did. Was Raja fulfilled by working at AMD? To some degree - maybe. If he would be fulfilled in 100% he would stay at AMD.
With this departure whole industry can gain. But claiming that some companies are doomed is just BS.