I am not sure who warned you, but this hardly any mystery.

Those who rejected the Church's teachings in the uproar a couple of generations ago fell into two camps: those who continued, at least at Easter and Christmas, to go to church; those who were reasonably catechized but at the minimum accepted that the parish offered the ordinary means to salvation.

In the first group the next generation was as likely to not attend the parish at all, or to wind up in one of the liturgical Protestant sects.

From the second group came the vocations, and those came from the most Catholic of the families.

And they are now being ordained and heading out into the parishes.

Small groups like those pictured will engage in sturm und drang over this transition, but they will be no more successful than their  sedevacantist predecessors were forty or so years ago.