I don't know what is the error, but if we take that wrapping 2 deg during that 1 ms contact time, as established before. Imagine what height does the angle 2 deg on the length 2 m - the approx. distance from the hit to the net. That makes tan(2deg) * 2m = 7cm. And 7 cm height difference on the net, in case wrapping vs non-wrapping, you know, these are big numbers. Definitely not something negligible.
EDIT: To clarify, I really had to convince myself that when something like that "wrapping" is happening DURING the very short ball contact time, it can have a real effect. I simply was not sure, and I was open for both ways. But now I am sure. Our TT universe is tuned so that it really does have an effect. Now obviously this is a 2-sided sword, because when we are changing the angle during the whole stroke, then the angle at which we hit the ball - the angle at start of the contact - is harder to time precisely. That I agree with. But this is a separate problem. We see FZD and others are changing the angle during the stroke (not only during contact), and we see they consistently land it on the table. I don't know how they do it as good as they do. If I knew, I'd keep it for myself for a while. Imagine how it would look like, if I leak it here.
My thoughts here.
If the racket was directly perpendicular to the ball and travelling in the exact opposite path of the ball, any mistiming would never result in missing the ball and will still result in a solid ball contact (the analogy is a head on collision) . However we all know that is what a flat hit does and unfortunately flat hits do not produce the Magnus effect that drags the ball down to the table which is what actually gives loops the amount of penetration and security it does.
If the racket path was say completely tangential to the ball path, it'll be like a T bone collision (which can be avoided if any car went slower or faster), any mistiming and the ball may hit the edge of the bat (if the ball was few mm deeper than anticipated), or completely miss (if the ball was few mm shorter than anticipated). This is precisely the most problematic part of the "linear" stroke crowd - I know players who loop like that and they always have this problem in their ball contact. No one is that precise all the time after all. This is why Fang Bo in his channel always advises against thin contacts in almost every stroke (yes even counterloops!)
Everything else is in between.
Hence that is why the circular or pronating (FH)/supinating (BH) contact is superior and you see clearly how players like Fan Zhendong use it to its max (you can see how many mistakes he makes during the training, close to none!). You hit the ball close to full on (similar to a flat hit) which means less issues with mistiming, but because you start closing the bat angle throughout the contact, the ball will still rotate strongly due to the nature of your impact. In fact, you can contact the bottom of the ball and still produce a heavy topspin (my suspicion is that brokenball has absolutely no idea how to execute this technique - he might get mindblown at this concept). Not just the security of the impact, you also enjoy the power similar to a flat hit, while retaining the advantages of having the Magnus effect.
In terms of mistiming the "wrapping", sure there's issues with that but because of the Magnus effect those variations are not as bad because the ball will eventually be dragged down to the table (it is a huge contributor to consistency).
For eg latej calculates 7cm error, even if I mistime the ball and the ball height is 7cm higher when clearing the net it is still gonna land on the table as maybe a deeper, higher topspin if I get a lot of topspin on it. And it may not even be an easy shot to deal with for the opponent.
