It may or may not be true, but 'generic/predictable'? Come on, what? How is that generic or predictable. To be generic, this would have to be a common happening. As for predictability, this is the first I have heard of this theory at all. Everyone else I've talked to has been clammering on about how Charlie must be -the- Charlie, which is even more ludicrous of an idea the more you think about it.
Generic may have been the wrong word but predictable, definitely. 'Oh the baby is named Charlie, there is time travel, therefore the baby must be Widmore or Pace.'