Sounds to me you're all over thinking this way too much for the sake of the current discussion. JJ's film was for all intents and purposes meant as a reboot and they found some scifi-y way to still tie it into the previous Treks. But it is highly unlikely that new installments will have any strong ties to the previous series. Old Spock is probably all we'll get in that regard. In that way it is reasonable to see a division between all that came before and the new film. Combine that with the very low probability of seeing any `continuation' of the old Trek back on the screen I can see how some people might not like that. But then that probability was as low as it could get when Enterprise ended it's run, so I'm not so sure we actually lost something there.