I think that part of what I discovered in the multiple degrees/kind of aphantasia. And like you most of those questions dot make sens. For many aphantasic people they do. And a lot of question I get is "how do you remember color if you don't see them in your head". One of the analogies I have is that my memory is a bit like a hash/bloom filter. I can't really get the original value, but I can tell you wether it's the same or not. I think the other part where aphantasic differ is WRT math. Others in this thread said that can't do math in their head as they can't see the number/equations. I have no issues with it but I don't rely at all on the number symbols in my head (or on paper) to do arithmetic. I wouldn't be surprised if aphantasia get more subcategories in the following decades.