I thought the world champions have first choice in where they want to go????...so, i'm assuming she would want to go to Skate Canada and something else that is not NHK or Rostelecom...they will probably put her in France again anyways...
NHK and Rostelcom don't want Kaitlyn for the same reason she doesn't want them: they have top skaters that don't want to meet her / she doesn't want to meet.
The seeding is supposed to prevent top skaters from meeting at GP events, but this year it's weird because Medvedeva and Zagitova would be top seeds based on the Olympics, but aren't because the seeds are based on Worlds. They're still top skaters, despite their seeding, and it isn't in anyone's interest to have top skaters meeting at GP events. Unfortunately one of the top seed is going to have to meet one or more of them at Rostelcom. And if they're at a lot of different events, at other events as well.