Abrams is a franchise slayer: first Star Trek, now on to Star Wars.
It's valid to say you don't like Abrams contributions, but in no way is it rational to say that he "slayed" the Star Trek franchise. In order for him to have done that, it would have had to have been alive to begin with. Between Enterprise and Nemesis, it was dead as dead could be.
As for Star Wars, I doubt he could do worse than Attack of the Clones if he tried.