That is correct :) As of right now, the plan is to keep the federation policy separated at the instance level. There are some subtle differences in the current draft of those policies
- https://fedecan.ca/en/guidelines/2-lemmy-ca#federation-policy
- https://fedecan.ca/en/guidelines/2-sh-itjust-works#federation-policy
Some of the instances in the list are obvious spam/scams that no one wants to see, and sh.it just.works might defederate away from those ones easily. We have only started working together somewhat recently, and its likely that many instances in this category just never federated over to them, or they have already shut down.
For others they will need to raise a discussion with their users to see if that is something the users want. I think it is healthy for there to be some differences in the overall federation lists, since then users can choose which experience is right for them.
Also tagging @SomethingWentWrong@lemmy.ca, thank you for doing the work and sharing those lists / the script. We haven't had a chance to do this kind of analysis yet. Another advantage of listing the federation decisions is that users can compare instances when deciding where to make an account.