But then, they wouldn't be using nationals of the previous season, and worlds of the previous season for the primary tier of BoW.

If we are to test Olympic preparation using the criterion you suggest, the most weight should be given to the American women who make the GPF this season! (ETA: Meaning, if the primary focus were to be on the Russian skaters who are possibly going to be competing in the Olympics, then the most focus would be on GPF, and probably also the fields of the individual GPs for that matter, whenever relevant. Yet, we see GPF 2021 being lumped together with 2021 Worlds, and 2022 Nationals, and also see 2021 Nationals has some weight)