Read back what I said about using time travel in anyway makes you essentially a Demi Urge . Using time travel at all is essentially failing a morality check .
Once again this is me answering the question , regardless of wether the answer satisfies you doesn't matter it is the answer given to your question
"Using time travel is bad because using time travel is bad" isn't an argument, though.
I get that you are concerned about denying others their autonomy, but who is to say they haven't already been denied their autonomy? The Mortal Kombat universe pre-Jax changes was already a deviant timeline due to Raiden messing with it. Why do the people in that timeline have any more right to exist than the people that existed in the original timeline?
If you change the timeline, the people from the shunted timeline never even existed, so how can you deny them autonomy?
Whatever is reality
is reality. The people who exist will perceive it as the only reality they've ever known. Hell, reality could be constantly being changed for
us, but as we're part of reality, we have no way of observing it, and thus would be perfectly unaware.
Jax used his power selflessly to make things better for everyone,
and left it at that. He's down to earth, so he helped everyone out and didn't do anything ridiculous like make himself king or whatever. I'd say that's more moral than saying "no, people deserve to suffer because I personally have decided that time travel is inherently evil".