Haven't seen it yet, but isn't it an alternate time-line? Since it is an alternate time-line, it doesn't have to match up with all of the crap that was put out a decade or more ago. In reality, doing an alternate "history" of Star Trek is a smart move considering that all of the previous series were filled with inconsistencies. You get to ignore all of the garbage movies that were commercial and critical flops and do your own thing. Now you get to see how these characters would react and grow in a new and exciting way in different circumstances. So yeah, the "Bible" doesn't really matter other than giving us a small reference point to say "Oh yeah, this is Star Trek."
Another thing to consider is the future life of the franchise. By making it younger, and by going alternate time-line, you get to start fresh and grab the attention of a new audience that will end up being the franchise's fiscal support over the next several decades. Realistically, the "core" group Star Trek followers isn't that high anymore. The big convention only has 10K people attend. If that core group of people won't make you any money (which it hadn't been doing for years), you need to get a bigger and fresher audience - and then you need to give them something new to chew on.