As someone who can't see images in their mind (except for very rare, very brief, very blurry images that kind of just show up uninvited on their own), I have to

As someone who can't see images in their mind (except for very rare, very brief, very blurry images that kind of just show up uninvited on their own), I have to disagree with the conclusion of your premise here. It doesn't come with practice. It's like telling a paralyzed person to just practice walking. The wiring just isn't there for some of us. Probably because we're zombies that haven't gone feral yet.