Hah, I think some cherry picking may be happening. I suspect more facts may revealed about this in due course
Not so much cherry picking, as a hunch, based on wild conjecture, drawn from the precious little publicly available historic info, coupled with firsthand exposure to aiki of that same provenance.
Shioda's work looks, to my eyes, like a hybrid of Kodokai aiki and technique and Ueshiba's interpretive ballet. With a healthy injection of Gozo quirkiness and cock-of-the-walk showmanship.