> a team that has a free-for-all remote policy is effectively a remote team (as others have noted)

I don't think this is true in the sense that you (or possibly the original commenter) mean. I think what happens is that if, e.g., 1/3 of a team is remote, the rest of the team has to choose between either excluding them by doing most interactions in-person, or leaning heavily on remote even though 2/3 of the team is in-office.