Did you read anything I typed?
I've tried to grow outside about 12 times. Half of them were to completion. Half died. This is over the span of 20 years. I believe it has more to do with factors I cannot control than the ones I can.
Indoor, I've never lost a single plant. Clone or otherwise. The only way to fail at cloning indoor is if you did something wrong. If you have a good system and are consistent, anyone can achieve the same results.
My father (who taught me how to clone and grow) also hasn't lost a single clone in his almost 40 years of growing.
It's not a hard thing to do. If you're going to make 4 clones. Take 6 cuttings, all from top or upper portions of the plant. Scar the stem a bit after you 45 it. Stick it in a solo cup full of medium (in my case
promix hpcc) and water it. Keep it under somewhat weak light like a les bulb or a CFL bulb. Or like I do, in the veg tent under the foliage of another plant.
I don't even look at them for like 5 days after. On day 5 to 7 I check them out to see if they need water yet, and I toss out the 2 with the least new growth.
Never had one die. Boom. Maybe contributed to the fact that I was taught how to do it properly to begin with. Who knows. But what I do know is other people have has the same success as me. And most people after figuring out a good process also NEVER lose clones.
Hell, outdoor farms who take cuttings I the hundreds at a time and accept a certain amount of loss therefore are not as careful as they could be, get over 99% success rate for cloning. And they are jamming flats full of hundreds of cuttings and treating them as a single thing rather than giving each one individual attention.
They expect to lose some, and plan for it. Therefore dont even try to attain 100%
I'm sure they could if they tried.
Now all that being said. I don't care about your jujitsu analogy. It's not even close to the same thing. You do know some professional fighters actuall do retire undefeated right? You do know that the analogy is flawed cause to be a proper analogy, would require me to have never taken a clone.
I don't know what else to tell you man. Maybe get out of your bubble. See the world, learn that sometimes some people are lucky or good as something. Or that the thing being claimed isn't that big of a claim. If fact, it might be almost normal.
If you tried. I'm sure you could get to 100% and never lose another clone again. It's not hard.