So Pickering is still dedicated to his argument in favor of the majority text, reflecting the Byzantine tradition (or archetype).
p.79 of the above:
"But what if we were to entertain the hypothesis that the Byzantine tradition is the oldest and that the "Western" and "Alexandrian" MSS represent varying perturbations on the fringes of the main transmissional stream? Would this not make better sense of the surviving evidence? Then there would have been no "Western" or "Egyptian" archetypes, just various sources of contamination that acted in such a random fashion that each extant "Western" or "Egyptian" MS has a different 'mosaic'. In contrast, there would indeed be a "Byzantine" archetype, which would reflect the original. "
"The mean text of the extant MSS improves century by century, the XIV being the best, because the worst MSS were not copied or worn out by use; whereas the good ones were used and copied, and when worn out, discarded."
A principal argument on p.78 is:
"In his book Aland's discussion of the transmission of the NT text is permeated with the assumptionthat the Byzantine text was a secondary development that progressively contaminated the pureEgyptian ("Alexandrian") text.[2] But the chief "Alexandrian" witnesses, B, A (except e) and ℵ (TheText, p. 107), are in constant and significant disagreement among themselves; so much so thatthere is no objective way of reconstructing an archetype. 150 years earlier the picture is the same;P45, P66 and P75 are quite dissimilar and do not reflect a single tradition. In A.D. 200 "there was noking in [Egypt]; everyone did what was right in his own eyes", or so it would seem."
[2] K. Aland, "The Text of the Church?", Trinity Journal, 1987, 8NS:131-144 [actually published in 1989], pp. 142-43.
One incongruity is that it isn't clear if any of the so-termed "Alexandrian" uncials derive from Egypt: the source of perdition according to Pickering, where the copyists "did not know Greek" (which is an assumption that is not proven).
It doesn't matter whether the Alexandrian uncials derive from Egypt or not. Doesn't matter if there from Rome or from Alexandria or from Syria or the capitol of the Byzantine empire. They are what they are. It won't change their Text.