Yes. In fact, not only did I get it; I mastered it eight times. That is, legit, without a cheating device.

I was so insane and gullible as a teenager that I found some FFVII fansite with an elaborate "Revive Aeris" rumor when I was 13 and using the internet for the first time, and my 13 year old brain said "I SAW IT ON THE INTERNET, IT MUST BE TRUE!". One of the requirements of the rumor was to master KotR eight times then equip them all on Cloud's Ultima Weapon.

When I got to the point where you're supposed to fight the "Holy WEAPON" well, needless to say I was disappointed.