LOST Theory from Tonight’s Episode

When the Locke-ness Monster says that he can give Sayid what he wants does that mean Lockness is the one that resets everyone and creates the alterverse?

Does Locke change everything for the Losties and makes Hurley lucky, Nadia still alive, Jack getting married, Claire having her baby, etc.? Is the alternate timeline the result of Lockness’s power to give them Another chance?

What do you think?