The issue under discussion was about the matter of the sacrament, not the form. (For that see the thread THE THIRD MAN.) However, note that substantial defects in the form do invalidate. Repeat that 1000x!
Argument is the same, but evidently you were unable to follow the logic. Pope Pius XII designated both the form and the matter in the then-current
Pontificale. This did not preclude non-invalidating defects ... or either form or matter.
Similarly, to use leavened bread in the Roman Rite would be illicit without a serious reason (emergency, or when that's all that could be obtained), and it would be considered a defect, but it would not invalidate the Mass, as leavened bread is valid matter.
You fail to demonstrate that the use of one hand is an invalidating defect. Given that the Eastern Rites use one hand for priestly ordination, it's clearly not an invalidating defect.
Nobody wants to read that tripe which called THE THIRD MAN.