They have to keep supposed exorcists in the Vatican II church to make it appear as if it continues to function normally.
It's the exact same illusion that was promoted by the film The Exorcist ( directed by the Jєωιѕн William Friedkin ). The movie was released in 1971, but it presented a very old-fashioned view of the priesthood. When it shows a church it is not a Novus Ordo church but is as dark and mysterious as a chapel in Seville in 1430, and the priests are not liberals but idealized, embattled warriors against Satan, such as who have in all likelihood probably always been rare. But this did not at all represent the reality of the post-VII era. It was an alternate universe presented as reality.