@dansup I've supported a "wait and see" approach to Facebook (by whatever name) on the Fedi: Wait and see if they ever decide to start acting decent, and *then* think about whether or not to federate with them. Don't hold your breath waiting. They're proven hostile.
If you could tease apart how many of the followers are non-federating and exclude them from the count, then go for it, but IMHO that's far more effort than Facebook deserves.