I would consider myself a traditional Catholic, but to clarify, I’ve been much further down the rabbit hole than I am now. I too had a phase, where I bought into the narrative of the new Mass being bad, and where I’d only go to the TLM. I’d still go to the TLM 99 times out of 100 if I had the choice.
But I was never in sedevacantist territory - in that, even though I believed Pope Francis to be a terrible pope, I still considered him as the 100% authentic pope.
All this just to say: I understand what the Church is talking about when it talks about “full communion” or when the SSPX talk about the disadvantages of the Missal of St. Paul VI, but on the balance, today I hold all that the Magisterium says to be true…
In the SSPX that I frequented, I often met people who thought they might be holier than the Pope. And people who thought there was no pope. But never once did I talk to anyone who took themselves to be pope… But I think it’s true that sedevacantism as a movement is more liable to fall into that category…
if you were baptized in the trinitarian formula, Catholic or otherwise (even by SSPX) it would be considered a valid baptism.
Of course it would. A LOT of protestant baptisms are considered valid by the Church.
The SSPX is a bad example here, because they are notoriously scrupulous about the form and intentions of their baptisms. An SSPX adherent would be very unlikely to be invalidly baptised.
But I guess your point might have been that sedevacantist groups also have valid sacraments - in which case I should just clarify that the SSPX are not sedevacantist.
