I can see where things don't seem to add up with respect to the separate CSPV group and 1918 Canon Law (? btw, why are they saying 1918? I thought it was the 1917 Code).
However, just keep in mind that as our moms get older, they aren't always the best source for accurate information.
No, my Mom was accurate, having gotten some of it directly from Father Jenkins, and some from the chapel coordinator, who was in constant contact with Father Jenkins. It's just that she's not been updated on that point, and evidently the naked body scanners were removed from airports in 2013. Bishop Santay was consecrated in 2007, when these were still out there, and it's a fact that he conducted driving confirmation tours out of a refusal to go through those earlier models of scanners.
As for 1918, that's a good question. Perhaps the 1917 Code was finally printed in 1918? Sometimes they put out an "Editio Typica" first but then it doesn't hit the presses for a while?