Hehe told him already awaiting an answer or for him to contact you directly. And yeah, i totally agree for most part, in fact thats exactly what i thought myself at the start. Thing is that one has to know at least a bit to make a character properly (To know who the char actally is) and to know at least the basic things such as if you live in a hive knowing what a hive is.
When i first corssed this game i found myself knowing enough of "macro" fluff and stuff, but lacking enough "micro" about the imperium of man and its small things planets administration etc to play this properly. for that end, i repeat myself core rulebook does wonders, and if you want to keep the spirit of what we both agree in what you siad, you can always "skip" the bits your character wouldnt know.