Is the Hebrew Letter "Yōd" a Fake Letter?

 A student of ancient languages recently stated that the Hebrew "Yōd" [י] is a "fake letter." 

He learned this in his Christian college. 

This is shocking in light of the fact that the yod is used as a letter in all ancient languages in which it is seen, and it is pronounced.

 

 

The yod is used in the name of the Jewish and Christian God, YHWH, [יחוח]

The Hebrews and Phoenicians used the same letter [Yōd] in the same way, and it is the Yōd that gave rise to the Greek letter Iota [ι]. 

Jesus spoke of the Yōd when he said not one iota [yod, the smallest letter of the alephbet] ... of the Law would pass from the Law until all be fulfilled.

Yodh (also spelled yud, yod, jod, or jodh) is the tenth letter of the Semitic abjads, including Phoenician Yōd , Hebrew Yōd י, Aramaic Yodh , Syriac Yōḏ ܝ, Persian Ye ی‎, and Arabic Yāʾ ي.

The Yōd is not a fake letter.