I dispute Mask's assertion that before Vatican II all the clergy were well trained and knew their stuff and could be counted on by that alone to validly confect Sacraments. I knew some pre-V2 clergy who barely knew Latin, and even among the bishops, why do you think they brought periti with them to the Council? ... because they couldn't understand the proceedings due to the Latin and also due to the theology.
Nevertheless, their Sacraments are presumed valid unless a positive doubt can be established about a particular case, and that had nothing to do with a presumptive quality of training. This sounds more and more like a Kelly-ite lackey. For all we know, the Mask is a reference to the fact that Bishop Kelly is wearing a mask here and disguising his identity.