I have a question and i hope you can tell me the answer

So sorry if this is a spoiler to some new people but my question is with the homeless man/Ted so we know he is the future version of ted and since ted is like 35 and the homeless man is like 50 does this mean that technically there will come a time where ted just disappears ALSO is the homeless man every version of ted or is it that everytime he dies in a timeline he is thrown into a different one like when he(homeless) was killed in TGWDLM like does that mean that is a different au of ted because the ted in TGWDLM was also taken over by pokotho but to be the homeless man they have to find out time travel and mess with it so why would they mess with it when they were under pokotho's control so to reiterate does the homeless man work like he dies in this timeline so he is driven even more insane and thrown into a different timeline because it doesnt seem able to work any other way