This as well as your other posts brings up this point.
All the more reason Time Travel is not and will not be possible. I have given reasons of a physical nature why no one can TT, including this guy, but there are Spiritual reasons also. Now is as good a time as any to get into some of them. Why would God allow TT? He wouldn't simply because if you could TT you would be as all knowing as God. Pamela you asked this TTer when you would die. Unless you are on death row, you don't know the day you will die. Only God does. For this TTer to know and to tell you makes God wrong.
Some believe Titor spoke as if the Rapture had happened in his time. In some people's eyes Titor has been elevated to the stature of Prophet. Again why would God allow anyone to go back in time and tell people when the Rapture will happen. He has withheld that information even from His own Son.
TT would allow the traveler to take the life of someone they know was still alive in the future, thus changing God's plan for that person. The many time line hypothesis ( I use that term for a reason) doesn't account for this. Multiple time lines are themselves an attempt to remove God from the equation. If everything that can happen will happen then what need is there for Salvation. We cannot be held accountable for our actions.
There have been many prophets throughout history. None have claimed to be from another time. They all claim to have had a vision of the future. Not to have been there or be from there.
This guy seems nice enough, Titor seemed nice enough, but neither is/was from the future. Neither is/was a TTer.
There is more to this position on TT but this should suffice for now.