"elbow crushing" technique ????
No trained attacker will attack with arms straight, instead, they ALWAYS bend elbows. Straight elbow is easy to snap only with light touch, so nobody attack this way.
One more illusory technique. Ikkyo is much more efficient.
I'm a little confused...are you saying this relative to hiji shime/ wakigatame? Aren't most ufc type matches ended with a simple arm bar of some type? These are trained attackers, and they are tapping regularly to this type of technique. Waki gatame is a long time judo standard for submission...