So I actually read the book; while there is a little "dis" in there, but the portrait is very partial: "Nate Caplan, my IQ is 160" of "OverpoweringFalsehood.com" is actually pictured as the rival of the "benign SuperIntelligence Project" (a stand-in for SIAI I presume, which is dissed in its own right of course). I think it's funny flattering and wouldn't take it personally at all, doubt Eliezer would in any case.

BTW the book is Ok, I prefer Egan in far-future mode than in near-future.