I'm not entirely sure what your criticism is. I'll take it as meaning 'isn't it just an arbitrary accident that the vampires happen to be more rational than humans, and not an intrinsic part of those characters?'

No. It isn't. If you remember, one of the running suggestions in Blindsight is that consciousness is a useless spandrel that sucks up tons of brainpower, and which can/will be discarded with much benefit. The vampires may be rationally superior to humans because they are p-zombies, and they evolved that way in order to effectively predict human actions and hunt them. The arbitrary accident was the cross glitch - otherwise the vampires would have won rather than died out. If the vampires could as well have been less-rational-than-humans p-zombies, that would undo that major theme.