I'm not really surprised regarding the use of coincidences given Abrams' role.
A lot of shows these days like to include Fate or a hand of God(BSG, Lost).
The issue I have with it in this film is that it isn't handled nearly as well as on Lost or Heroes in season one, for instance, where characters cross paths and are brought together in more organic plausible ways that don't feel contrived. Here you could definitely feel the writers' hands at work.
coincidences are the very stuff of storytelling.
what bothers me more is the deal about the Red Matter getting to destroy Romulus before Spock was able to do anything about it. how? did no one chart its path and speed?