It does sound like Bishop Williamson is characterizing the any doubts about the +Thuc line as negative doubt. Otherwise, except in danger of death with no other alternative, one cannot approach Sacraments that labor under positive doubt.
Or is this more of a subjectivist position similar to when he said that people could attend the NO Mass also?
Sometimes His Excellency is not quite clear about the principles in any scholastic sense. I wish he would elaborate the principles sometimes, distinguishing between postive and negative doubt and explain why it would be OBJECTIVELY permitted vs. just putting a bit of a subjectivist spin on it.
And that has surprised me about Bishop Williamson, since of all the Traditional clergy, he has always been SPOT ON about railing against subjectivism, describing it as the chief error of Vatican II, picking up momentum from the Renaissance onward.
In any case, if I were a bishop, I'd be tracking down worthy candidates in every Metropolitan area with a reasonable amount of training. There are probably former seminarians out there everywhere with enough Latin and theological training to be able to reliable confect the Sacraments Many souls might be saved. As I wrote in defense of Bishop Slupski earlier, he lived through this under Communism and probably had the right idea about what is to come.