Fr. Pfeiffer, when he was up here on Palm Sunday, used the old ritual.
I really think it depends on what is provided to them. If a Mass center provides Fr. Pfeiffer with the modernized Holy Week rituals, they'll do that, but if a Mass center would provide the old version, he would do that.
If the Mass centers would uniformly provide the old Holy Week ritual, by giving them the old missal (the 1945 missal is the one we have up here) they would provide us with the received and approved rites as it should be.