I am not sure if you are trying to convince me that memories are like movies?
I mean I can describe my memories as movies to, in a way they are like movies in certain ways.
But they are not movies, they are memories, they have properties that movies don't have and movies have properties that memories don't have. They share some properties but that does not make them the same thing.
If not, this is irrelevant, but if you have, you will likely recall that the film's core narrative is about memories.
All those memories are depicted as audiovisual records of events, often (literally) colored by an emotional overlay.
I think they represented them that way because most or all of the core project team shared that experience of memory.