Do you think this is the same in Kokodo Jujutsu?
KoKoDo has gradually continued to differentiate itself from Hakkoryu over the years, but since KoKoDo is still a martial-and-healing system like Hakkoryu, I'd say the answer is yes.
When I was formally affiliated with KoKoDo, practicing kamae and developing spiraling within the kamae were emphasized by Irie Yasuhiro. Jamie Campbell and Ivo Belmans
, two long-time KoKoDo shihan who were also affiliated with Hakkoryu in the past, also both emphasized the importance of practicing kamae -- though it was still up to the student to discover for himself / herself why this is important, and how to attain the qualities of relaxed strength. Ivo does quite a bit of traveling throughout Europe as KoKodo's main representative there. I would recommend you train with him as well, if the opportunity arises.