They said they didn't think they'd get GP assignments, but not that they actually wouldn't have. Safina/Berulava placed 4th at Worlds 2021-22, so Metelkina/Berulava should have been eligible for GP assignments under the same "split couple" rule as Peng/Wang (Peng/Jin were 5th at Worlds 2020/21).
Maybe they initially would not have received two assignments, but Hase/Volodin (same rule) & Liu/Nagy also ended up getting second assignments, so these two likely would have too, if they had been patient enough to wait.