I could have been more clear I guess. It's not the optimism about the future that bothers me, or even about technology per se. It's the apparent belief that irreverent vision-driven geniuses leading technology-focused companies is a coherent path into a positive future.
To me this view is extremely american, contemporary and unproven, having emerged just in the last few decades and already running into serious issues with its viability as a mechanism for wide spread long term positive change.
It's not that I mind someone exploring this model, or portraying it in fiction. I think it's a backdrop for some genuinely interesting and dynamic conflicts, as demonstrated by the book itself.
My issue is that this system has been taking on an almost religion-like character in some groups, and stephenson seems to be a true believer. Again not necessarily a mortal sin, but it leaves him with some blind spots that are frustrating as a reader and as someone who is also, on a good day, an optimist about technology and the future.