Quote:We are not of this religion. We do not accept this new religion. We are of the religion of all time, of the Catholic religion. We are not of that universal religion, as they call it today. It is no longer the Catholic religion. We are not of that liberal, modernist religion that has its worship, its priests, its faith, its catechisms, its Bible."

Quote:“Clearly, we cannot accept this faked new rite of ordination that leaves doubts concerning the validity of numerous ordinations done according to the new rite. Thus this new rite of ordination is not Catholic. And so we will of course faithfully continue to transmit the real and valid priesthood by the traditional pr traditional priestly rite of ordination.”

Quote:17) Are the sacraments of the rallied priests valid?

The sacraments of the rallied priests are valid to the extent that their ordinations are valid (for the sacraments which require the priesthood in the minister). However, one can have a doubt about the priesthood of clerics rallied who were ordained by bishops themselves doubtfully sacred [consecrated] because of ambiguous intentions and the new rite of episcopal consecrations (after 1968).

• "From this it follows also that they cannot promise themselves any of the graces and fruits of the perpetual sacrifice and of the sacraments which although they are sacrilegiously administered are none the less valid and serve in some measure to form an appearance of piety, which St Paul mentions I Corinthians chapter 13 and which St. Augustine speaks of at greater length." (Serm. LXXI, in Matth., 32) Pope Leo XIII Eximia Leatitia, July 19, 1893, to the bishops of Poitiers)
  

• "The form of the branch may still be visible, even apart from the wine, but the invisible life of the root can be preserved only in union with the stock. That is why the corporal sacraments, which some keep and use outside the unity of Christ, can preserve the appearance of piety. But the invisible and spiritual virtue of true piety cannot abide there anymore than feeling can remain in an amputated member." (Sermon of St. Augustine on the Gospel of St. Matthew). So there's no grace that flows from their sacraments.
  

• "And since the conservation of the Eucharist is a power which follows the power of Order, such persons as are separated from the Church by heresy, schism, or excommunication, can indeed consecrate the Eucharist, which on being consecrated by them contains Christ's true body and blood; but they act wrongly and sin by doing so; and in consequence they do not receive the fruit of the sacrifice, which is a spiritual sacrifice." St. Thomas Aquinas [IIIa q. 82 art. 7, c]
  

• "The priest, in reciting the prayers of the Mass, speaks in the person of the church, in whose unity he remains; but in consecrating the sacrament he speaks in the person of Christ, whose place he holds by the power of his Orders. Consequently, a priest severed from the unity of the Church celebrates Mass, not having lost the power of Order, he consecrates Christ's true body and blood; but because he is severed from the unity of the Church, his prayers have no efficacy. St. Thomas Aquinas [IIIa q. 82 art. 7, ad 3um]
  

Quote:In answer to your question if the sacraments are a doctrinal or prudential question, they are, in fact, the perfection of both.

It is of doctrine that Christ instituted them as well as the clear matter, form and intention to be followed. That they give supernatural grace and other graces is also doctrinal.

Prudence comes in on circumstances surrounding them, such as, is such & such a candidate worthy for ordination or prepared enough for matrimony or first Communion?

So, with the new sacraments, it is doctrinal and not merely practical, because to change the matter, form or intention, as they do, affects whether they are valid or nor; whether they give grace or not. On these effects of the Sacraments depend eternal salvation.

So yes, they are firstly DOCTRINAL!