Well, I dug back through the old scripts and the ad you are hearing might be one from 1998 which had 18 Xs and no practice.
Technically the ad is accurate, but it would be more accurate to say 3 Xs with no practice, but practice if you want to go to 18 Xs.
Use the PhotoReading whole mind system on enough books and you will get there. You'd probably get their quicker if you used the system versus practicing the system.