Is the AI slop image necessary?
This whole post has real Jaden Smith energy. Your questions are effectively treating philosophy like a creative writing exercise, rather than a system of rational logic and critical thinking for examining existence and its aspects. These questions are lacking a foundation of what is being questioned in the first place.
Are you supposing that one's identity is beyond the physical realm, or is it beholden to our physical existence? Memory is already in a constant fluctuation and change by the inherent nature of our brains and how we interpret the world around us. What would be the source of the "edits" and what determines its direction? Why does it have to be "something bigger"? If a person's brain can conjure things that can convince us they are completely real, like with schizophrenic delusions or psychedelic experiences, why could this not be a similar function that is causing the feeling of existence having been "edited" by some external force?
Ultimately, what you are asking is "is there some sort of external spiritualistic force that is controlling our existence?" And your feelings of something being "off" are a kind of intuitive sense of that external force's existence.