Regarding your point, I agree that it can happen AND that Moy Yat warns about it when he says "don't when you mustn't."
Regarding my point, I'm saying that it's a trainable concept similar to "position before submission" (I use the term because it effectively illustrates the idea.)
As I see it, if one does not have control/initiative over an opponent's timing and structure/balance, one should be wary of hitting because there is always the chance that your point above will come true.
Likewise, if the opponent has control/initiative, hitting them is not the first priority; such hits are rarely effective (read "hail mary" or "low percentage.") Rather, the priority is to find an opportunity to regain control by at least getting to a neutral point of control/initiative first. Preferably while not getting hit, because:
Hitting when one has control/initiative means hitting whilst one has the upper hand. This is the "when you should hit-hit" time.
As an example, consider falling. Let's say you and I are sparring (no head shots) and you manage to make me stumble, perhaps even fall. Now, my mind is very much on regaining my balance or if unable to do so, absorbing the fall as best I can. Suppose that, AS I'm falling, you hit me with a decent (structured) basic WCK punch
to the head (you're not being mean - for the sake of the example, I changed the rules
)
This punch of yours will be vastly more effective than if you were ever to hit me in the head while I was structured for the "boxing" zone (expecting to get hit, so to speak) because, in the moment when my mind is on structuring for regaining my balance or falling safely, it is NOT on structuring for safely taking a punch. As such, being structured while hitting someone who is unstructured is one of the things to train for.
That said, it sometimes happens that we feel we have the opportunity to land something, in both an attached (sticking) and unattached (kickboxing) state, when we really can't. Happens to everyone. You know who it happens
less to, though? People who have trained against resisting partners and who have the control/initiative before hitting.
My understanding of this Kuit comes from watching beginners "jamming" against each other AND THEN muscling their way through, or beginners being pulled by Lop or having their arms dropped by Lan and resisting instead of capitalizing on their opponent's commitment. It's not so much about being gentle with one another (although respect should always be maintained during training) as it is about not falling into technical traps or bad habits.
I therefore feel that beginners should quickly have access to simple sparring drills/games; and that it is up to the instructor to make sure they are on a track which makes their training progressively more real (and doesn't start from way off in left field, such as tightrope walking.)
Did you sign a waiver of liability form when you started training? If you teach, do you require your students to sign one?