Because most of that stuff doesn't work well against a trained fighter. Ude Gatame, for example, is pretty easy to limp-arm out of. The tornado kick is too slow and is used from too far away; it's been attempted, and the defensive response is to, get this, back up.
Shoulder throws are occasionally used, but there's a danger of the guy simply climbing on to your back and locking in a choke. Elbow strikes are hard to land because they're VERY close-ranged weapons. They're usually employed on the ground, and occasinally from the clinch.
The double elbow slash (I assume you're talking about the one from Human Weapon) is a bit fanciful; if your first shot lands, you've probably knocked the opponent out of range, and if he blocks the first one, you have to completely reset your strike for a second one. The baliog pomali simply isn't trained much in the core martial arts common in MMA, like Taekwondo, Muay Thai, Western wrestling, boxing, BJJ, and Judo, but I also question how effective it could be. A good wrestler will not flare his elbow above his head, which seems necessary to set up that particular move.
Even then, the solution seems to be simple: pull your elbows in and arch your head up. Elbows in, head up is the standard posture for good grappling. Wrestlers in particular have a strong neck.
So while I'm sure it's a good technique to use against someone who doesn't know anything, it wouldn't work so well against a trained fighter. The Wing Chun punch (again, I assume you're referrencing Human Weapon?) is actually a series of punches called chain punching. It's designed to off-balance and disrupt, but isn't particularly powerful.
When you're trying to knock someone out, as in MMA, you need power. Plus, MMA fighters will clinch or change levels against such an attack. Again, great in theory, works well against untrained opponents, but not so well against trained fighters.
Go try these things in an MMA gym against their more seasoned guys. You'll find varying degrees of success, but not as high percentage of success as the basics of wrestling, boxing, BJJ, Judo, and Muay Thai.
No, Tornado kicks are not effective. Except in movies of course. The simplist answer I could give you is that they don't work in MMA matches.
You saw people trying to use these moves in the earlier UFC's (UFC 1-10) and they quickly got weeded out. If anyone in the UFC were to use a "tornado kick" that would be the end of the fight for them. They just don't work at all with MMA's rules and they're not effective.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.