... in an art like aikido - it basically assumes that you have some degree of internal strength at work in order to appropriately train the techniques (classic examples being extending your ki/jin past a person's balance point while controlling the connection points between you and another person as if you were one unit). You don't need such a thing to practice the technique, especially in non-competitive "jujutsu" type circumstances and there's enough other things going on (ukemi, ma-ai, tai sabaki) to coordinate all at once that I'm not surprised that "internal strength" principles don't get much more than lip service, especially in larger groups.
Yes. Also, there are multiple levels of internal skill. Extend ki/fire hose is working something real and worthwhile--but it's only a first step. Moving the other person through a connection "as if you were one unit", similarly, is worthwhile--but at best, it's a second step. The challenge for us is to move beyond these lower level concepts--when O-Sensei talked about Izanagi and Izanami, or the Floating Bridge of Heaven, he was pointing to skills far in advance of these. Aikido techniques work best as the manifestation of those skills. It's seductive to reduce them to matters of timing and "getting out of the way"--but that's the challenge.