My bigger issue is the argument. Like, I'm admittedly a new convert. And apparently I'm supposed to *absolutely* believe my own interpretation of Florence over what all the clergy say. Like that, by itself, is a huge stretch.
This should give one pause. It's not just the writers of catechism. Garrigou-Lagrange, one of the top Thomists of the 20th century also said it's possible someone not visibly a member of the Church might be saved. (There were a few other Thomists of Garrigou-Lagrange's level, but he seems more well known in English.)
Abp. Lefebvre said the same thing. He was also well trained in theology, and apparently did not have a problem with this. Yet the "literal" laypeople say he was fundamentally compromised and accepted a central modernist idea. Without him, the traditional movement in the Roman rite would be a handful of old priests and the Thuc-line clergy - and very few of them are "literal" either.