Well a reboot often involves abandoning all established canon and starting again with the basic concept, which is fine by me.
Isn't that what each new Terminator
entry does anyway? To wit:
- The first film was an absolutely closed loop.
- Then comes T2, which introduces ways to change the timeline (including several different outcomes).
- T3 and T:Salvation. Ditto. Is the date of Judgment Day consistent across ANY two films?
- Sarah Connor Chronicles, which IIRC exists in a time stream unique to itself and not part of any previous film. I can't remember if it actually is supposed to lead to Judgment Day or not.