Do we know for certain what year it is on the island these days? I know the folks that got off the island got as far ahead as 2007. But once the bomb went off we learned the flight in 2004 was still moving ahead in 2004 and the island was under water.
When the bomb went off, we assume that things changed in 2004 as the people didn't crash on the island. But seeing how the real Locke was killed by Ben in 2007 and that hasn't happened yet, how is Locke dead? Do we have anything to set a timeline for when they reappeared on the island?
But Locke's not dead - as we saw his post LA X story. The writers apparently have set up a scenario where everyone on the island has an alternate LA X version. The people on the island are in their divergent timeline - so Ben did kill Locke. And Juliet is alive off island.
The writers appear to have written a bad scenario where the divergent timeline should have occured in the year the bomb went off - that was the event changer.
It changed all sort of events off island - but the story of the 815 islanders is contingent on pre-crash events that have now never occured.
The story breaks down under scrutiny. I would love to discuss but I think most will not want to follow the logic.