The question arises, how do they know that they actually can (defend themselves). And, what they tell their students when they haven't, proven that to themselves.
That is the basis of the issue. Most seem to just bypass the proof and say, yes I can.
Reality, it is the ONLY place where you will know 100% but, I also know, that a number of people, will classify it has insane and dangerous.
Up until that point though, the hip throw is hypothetical. As are all techniques, and that is ok.
It is ok to say "I don't know if it works in reality" there is nothing wrong with admitting that.
Although the sport arena is a decent place to test, it is simply a preliminary test. And, to say it is the only place to safely test it, is still putting it in the area of "I don't know"
This is actually a totally legitimate thought to consider. My conclusion has been that the question "can I defend myself" or "will my martial arts work in a real fight" is too broad to be answerable. Do I have the skills to defend myself from a 3-year-old armed with a banana? Yes! Do I have the skills to defend myself from an ambush by a gang of 15 armed thugs out for blood? Almost certainly not. There is a huge range of possibilities between those extremes and I can't say which of those scenarios I might someday encounter.
What I can do is identify those results of my training which I have tested often enough to have confidence in.
I know I can take a reasonably hard hit and keep fighting without panicking or losing my skills. (Not power shots from a heavyweight pro boxer, but a solid shots from a trained fighter.) Could that help in a self-defense situation? Sure. Not in every circumstance, but in many cases it will help.
I know I can land solid blows on an opponent who is defending my shots and trying to hit me back. Could that be useful? Sure. Will it always? Nope.
I know I'm physically and psychologically able to hit a trained fighter in my weight class hard enough to knock them down and even knock them out. How tough of an opponent could I do that to? I don't know. I've never fought a pro for real and I haven't knocked out enough people to have a really accurate gauge. Still, it could potentially be useful in a real fight.
I know that if I am knocked down or taken down to the ground that I can protect myself from strikes and grappling attacks and get back to my feet even when an opponent is trying to hold me down. I know that I can do this fairly reliably unless my opponent has skills and/or physical attributes well beyond 99.9% of the population. Could that be useful? Sure. Will it always? Nope.
I know that I have some skill in taking opponents to the ground, even when they are trying to hit me and stop the takedown. I also know that skill is mediocre compared to those I would consider true experts. I can take down most people, but not everybody and not right away. Could that be useful? Sure. Will it always? Nope.
I know that if I take someone to the ground that I can hold them down, beat them up, choke them unconscious or break their joints unless they have
skills and/or physical attributes well beyond 99% of the population. Could that be useful? Sure. Will it always? Nope.
I've know I've practiced sparring in a wide variety of environments and seem to be able to adapt on the fly without much effort. That could potentially be useful. I've never done it while going through a full adrenaline dump, though, so perhaps I wouldn't do as well in a real emergency.
I know I can demonstrate techniques from various arts for unarmed defense against a knife. I've even had some success in sparring against training knives, so it's possible I could be successful in a real situation. How likely is that? I honestly don't know, but I wouldn't want to bet on it. I've had failures along with successes in training and knives are ideal ambush weapons which would negate most of my techniques. (Not to mention the extra adrenaline that a deadly weapon brings to the situation.)
I've done enough sparring against multiple opponents to think that I might do okay against multiple (unarmed) attackers if they were not tough, skilled or determined. If they meet one of those criteria, then I still have a chance. If they meet two of those criteria then things get very iffy. If they meet all three, then I better hope I can outrun them. Since I don't think I can necessarily tell at the outset of an encounter which qualifiers might apply, I'm going to opt for skedaddling if at all possible.
I know I've had some success in de-escalating and avoiding potential violent situations in real life. I think my martial arts training has helped with that, but since I have no laboratory for testing that, I honestly don't know how reliable those skills are or how much my training has contributed.
Based on the above, could I defend myself in a real assault? In some situations, yes. In others, no. In others, maybe.
As a side note, I've been in a few street fights/self-defense situations and I've been in a few sport fights. The sport fights were much more demanding and brutal (both physically and psychologically) than the "real" fights. That doesn't necessarily mean much. In some cases the outcomes of a street fight could be much worse. I've been lucky enough to have never been in that situation.