Some people can't see mental images

I’ve read tons of these and still have no idea if I have aphantasia or not. I can’t understand whether people just have different ways of describing what’s in their minds eye or if there’s really a fundamental difference.

The way I understood it was the apple on a table test:

I was asked to close my eyes and think about an apple.

if you do it now, close your eyes for about 10 - 20 seconds and think very hard about an apple on a table.

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then immediately after opening your eyes tell me what color the apple was.

For me and many others it is an absurd question. We only thought about the thing apple on the thing table, absolutely no visual representation.

For some of my siblings they saw the apple and could of course tell me the color and also the color of the table.

The apple was red.

I didn’t even try to imagine anything. Apples are just conceptually red by default. I can also tell you that it was tart, and crisp. I didn’t imagine those sensations either, they were just the first words that came to my mind when thinking about apples. The table is brown. I didn’t try to imagine anything table either, but the table in my kitchen, where there might be apples, is brown.

Can you see how this exercise is flawed?