Yeah it is, like most stuff with the brain, a spectrum from low to high Aphantasia.

I can’t visualize anything in my mind, I can describe what I know or what I make up but that’s it a list of information or details, when it comes to world building highly imaginative details and information, but I have no clue how it really looks like. That’s why I love AI art generators, I can input all my imaginary details into the prompt and it then emulates my missing inner eye. Something I never could on my own, how should I draw something when I have only words to describe it? For me AI Art tools are a godsend, a pacemaker for my inner eye so to speak.