The flaw in the Terminator films is the premise that someone is returning to now from the future, altering the present in order to alter the future. If that is so, it is an endless loop of people/AI travelling back and forth to alter the past for the future, no end to it.
But then again I do not believe in most of the songs I hear which are presented as if they are worthy of all the attention they receive. Same goes for many big actors, comedians and politicians. It may be that this is proof reality is being tampered with and frequently.