Great question!
Assuming the person in question, was Baptized validly and had a devotion to the Blessed Mother, would go far.
That the person was duped and misled by the Church schism seemingly was not his fault.
That his Baptism and Our Lady would be sufficient to help the person receive more graces to discern the truth seems likely.
Who is more likely to be in a state of grace, a novos ordite who prays the rosary daily with his family, or a trad who doesn't ?
The covid scam showed us many novus ordites who refused the vaxx while Mgr Vigano, showed more catholic courage in speaking the truth about the con than most trad groups.
So when it comes to fighting for the truth, give me a novos ordite like E Michael Jones or Ann Barnardt over a trad who wealds the word 'prudence' like a weapon.
The stance of the SSPX, the Sedevacantist Bishop who was pro vax, (whose name I forget), shows that these people don't have the grace of state to advise us on much and quite honestly, we are on our own.
Mgr Lefevbre told us that some day in the future, we would have to rely on individual priests rather than any traditionalist group. These times are on us now.