Maybe they already did that. Maybe Epstein is filling them in because it has been shutdown.
Or maybe they haven't raided the island because it would have revealed their hand too soon.
Or maybe they haven't raided it because of the threat of a forceful retaliation. Nukes, bioweapons, something worse?
If truly we are dealing with the powers and principalities of the heavenlies the potential response to desecrating their temple would be unprecedented.