Devault being a gigantic dick head has no bearing on whether or not tangled does things. If sourcehut wants to remain the isolated hermit of forges because the greybeards that be think it was better before, let them do so and remain their island of weirdos. We already do the same with the freebsd guys (except that freebsd is actually good and impressive unlike sourcehut)
Sourcehut does not matter, and federation of repos is already a real thing. The ones that don't want to federate just.. don't?