Cresswell p. 244
If, as seems likely, scribe A wrote the gospels in sequence this would require everyone at the time to have missed the supposed major blunder or blunders by scribe A in Matthew, scribe D to have been called in to replace the Mark–Luke bifolium, the exercise of putting in the canon tables to have been called off during this exercise, and then and only then for scribe D to have been called in to firefight the newly discovered serious (though entirely hypothetical) solecism by scribe A in Matthew. This is all very implausible.