Ironically, in a videogame someone like Musk would always be at most an NPC, and possibly not even that (just a set of old newspaper clippings / terminal entries in fallout / etc). Yudkowsky would be just a background story for explaining some fucked up cult.
This is because they are, ultimately, uninteresting to simulate - their lives are well documented and devoid of any genuine challenge (they just get things by selection bias rather than any effort - simulating then is like simulating a lottery winner rather than a lottery). They exist to set up the scene for something interesting.
Its spelled “masterdebating”.