Charlotte happened before 1953, I believe, so unless Damon had some “special blood” in his system (which I guess is possible), the two sire bonds were probably a coincidence. *rolls eyes*
And that’s an interesting point. Maybe Wes didn’t want to destroy ALL the vampires, but all of the ones that were not under Augustine’s control. From the 5x10 synopsis, it sounds like Wes can “unleash” a secret weapon (probably Enzo)…. So maybe Augstine vampires can somehow be controlled? Maybe Wes wants all of the vampires gone except for the select few that he has captive at Augustine.