He had very little say in the forces that "destroyed the PC market". When he co-founded NVidia, it wasn't to become a geopolitical power player - no one could have predicted that 3d accelerator cards for gaming on PCs would have that kind of impact. If anything, NVidia has made some questionable business moves to not abandon their initial market, such as trying to prevent crypto mining on the cheaper cards meant for gaming.

His successor, however, probably got in position deliberately seeking geopolitical power. They're going to be worse in every way (except cheating on their spouse with subordinates, they're probably not going to do that).