I only discovered my aphantasia a few years ago (81 now) but was always aware that I didn’t think like others and was vaguely aware than many seemed to have a richer internal life than me. Though my IQ is around 135 I am hopeless at chess and many other types of puzzles. I suspect these require a mind’s eye to be successful. I am hopeless at some things but other things which are dead obvious to me are not so for others.
Lacking a mind’s eye many literary descriptive works mean nothing to me – take away the descriptions and what’s left? I assume I could never have PTSD as I cannot remember anything visual.
I suspect it stretches beyond the lack of the visual for me as I cannot recount smells or tastes either. I wonder how far the effects reach for others?