I realized I have aphantasia after reading an HN thread about it a few years ago. I talked to my daughter about it and I realized she has it too.

I've tried to explain it to people and they get confused. Just as I get confused about their perception; their imagination sounds to me rather like a psychotic hallucination, to exaggerate slightly. I've had some funny discussions about it.

In the end there doesn't seem to me to be any reason to get hung up on these topics. Everybody's inner world and perception can be different from others. That's fine and not a big deal.