There ARE FSSP priests who are conditionally ordained.
If they are conditionally ordained in the new rite, they are still doubtful.
If they are conditionally ordained in the OLD rite, by a bishop from the NEW rite, they are still doubtful.
Pax, your strongest opinion is no more “ex cathedra” than Lad’s.
It's not an opinion; it's based on facts. Every major Traditionalist group (not including the FSSP, which isn't traditional), says that the new rites of ordination/consecration are doubtful. Period.
The 'ex cathedra'/authority on what to do, in the face of doubtful sacraments, comes from Canon Law, not me, and not Ladislaus. Canon Law says it is a mortal sin to say, attend or support doubtful sacraments...except in danger of death.
Don't argue with me, argue with Canon Law.