Earlier quoted context omitted.
At this point I'm fairly certain aphantasia doesn't really exist (or is extremely rare), but what exists is a disconnect between what people understand the word "visualising" to mean I cannot project an image of an apple into my brain, but I can be aware of what an apple looks like and have that awareness move and rotate the apple. I would never call it visualising though
From talking to people, I would say it exists on a spectrum. I can imagine an apple, the color and texture of its skin, how it feels to touch it, its weightiness, its smell, the sound it'll make when I bite into it, as well as its taste and texture. I can imagine it at different levels of ripeness too, although I don't have the same amount of information for all of them. For me it's so clear that it's almost as good…
I suppose some people may imagine a "default apple" when given the prompt which would already have some parameters while others might try recreating an arbitrary apple from scratch in their head which wouldn't be very detailed. The object is only as detailed as you make it in your mind, which might take some creativity if you're not thinking about a specific one you've seen before. If you don't give it colour or smell it won't have any, it'll just be like a generic shape.