I've also 'cured' it, using a technique called image streaming, which most aphantasia sufferers can do. Very few aphantasia sufferers are actually incapable of using their mind's eye. It's hard, but apparently it gets better with practice. I have "seen" a mind's eye picture. It took me about 6 days before I saw something. I've not kept it up as it was kinda cool, but I've got enough projects on at the moment without adding another.
An easy test for you is to ask a friend to picture a person. Now ask what colour their coat is. For me and you, we have to make that up, add a new property to the description that is essentially a list of properties we know a person should have. For them, they already know, as they've "seen" a picture of that person. They don't say that they'll add the purple coat property to the list of characteristics, they have already seen a picture where the person was wearing a purple coat.
It's not mass delusion, it's a real thing. Also, of interest, is that there are degrees of skill, so some people have extremely vivid mind's eye, and some people have fuzzy, or black and white, or not very detailed, etc. Here's a good starter article:
I did it for about a week before I started seeing images, so it does take some practice and some time. I found recording myself while I did it helped me to keep speaking, which helped the process. The first few days were frustratingly without any progress, but things did start to come together about day 6 or 7.
At the time I had a ridiculous amount of projects I was trying to do, realized I was overwhelmed and this was one of the ones I have parked until a later date. I will try it again as it did seem to be working.