That is a very understandable and reasonable comment, Chris. All that said everything we train is about conditioning the body, albeit in a way most of us have never trained before. Everything we do can be explained and taught and defended mechanically. I have two world champion Bjjers, Olympic wrestlers and other wrestlers (I was a wrestler myself) and many MMA types among the traditional martial artists who train this. All of whom would agree with your comments instantly.
However, none of us would recognize your comments as belonging to or pertaining to what we actually train. I think it is the more traditional aiki guys who fall for the overly-cooperative nonsense seen in many of their practices; muscle cramping around joints to lock them, freezing/shocking diaphragms, jumping and seizing up many other antics as well as the stiff, overly complicated, Frankenstien jujutsu moves, and connecting to the opponents center are never going to work on non-cooperative players. They are simply part of a tradition and kata approach within those arts. Most people I hang with are as uninterested in that as you are.
That said, internal power training to create aiki is completely practical and pragmatic. When it comes to budo, if I cannot make it work in cross platform combatives with and without weapons, or see it improve my health and my game, I am not interested. I have better things to do.