My understanding was that the Vahi would create a new timestream, where the user made the choice to travel back, and one where they did not, similar to the Grandfather paradox. My understanding is pretty limited, though.
If you're right, obviously my time-travel point is dismantled for the most part- however, most people who do complain about time-travel do so under the assumption that it doesn't destroy the universe, only creates plot-holes and changes the present. Therefore, they are still being hypocritical, even if they and I are wrong about the logistics of time travel itself.
@KAI_BORG &@LTVmocs: @BlackBeltGamer98 isn't proposing that the Vahi does have the ability to time travel, he is only talking about if it did in a hypothectical sense.