This should never, never, never be a bone of contention or a point of debate amongst traditional priests. I am not a sedevacantist, far, very far from it. The Church cannot promulgate something injurious to Faith and morals. It certainly cannot promulgate a sacrilegious 'messe batard'.
The inference, no, not the inference, the inescapable conclusion of saying that the Newmass was 'legitimately promulgated' is that, as the Church cannot promulgate something injurious to Faith and morals, then the Newmass is not injurious to faith and morals.
Now this is just not on. I think I said elsewhere that if that were the case, you and I might as well link arms and dance to the nearest Novus Ordo. We would be, as the 'immortal' and thoroughly scandalous docuмent Summorum Pontificuм says, 'attached' to Tradition as 'an extraordinary form' - nothing more than a sentimental preference.
If you accept the Newmass as legitimately promulgated, you swallow the whole Conciliar Revolution whole. The most you can say (forgive me if I bang on on this subject fairly regularly) is that the nice Council Fathers were misinterpreted (ooh!) and that Dignitatis Humanae, Unitatis what-ever-it-is (Reintegratio?) can be 'understood in the light of tradition'! Hermeneutic of Continuity alert! Man the barricades! No Catholic can do that.
Why am I rehashing the simplest of all, the very plank upon which the Archbishop and the whole of Tradition stands, that the Conciliar revolution and all of its damnable reforms cannot be licit, cannot be good, are evil in and as of themselves, to, as it were, the choir? Only to show that, really, if any 'traditionalist' thinks they are licit (and so morally good), or thinks they can assist at the Newmass, then the plot is well and truly lost.
Charlemagne - there can be no obligation to assist at an objectively mortal sin of sacrilege. We do not fulfill our obligation at the Newmass. It is a bastard Mass, a sacrilege.
I for one, owing to distance and the cost of petrol, shall have to make do without the Sacraments, I do not know quite how common it is (by the by, I would appreciate any prayers anyone could spare).