There are SSPX priests who will argue that the supplied jurisdiction was never an argument for validity of marriages but only confessions. If any have come to the point of getting married by an SSPX priest, there is a form which one signs. The form explains that the milieu of the Novus Ordo etc, but does not specifically mention supplied jurisdiction. Newer SSPX priests do argue that the supplied jurisdiction was only in regards to confession. I had a long conversation with a priest about this just recently.