Gordon's theory is a mix of conspiracy (along with the typical dismissal of established scholarship) and a bit of showmanship in a digital age. He makes factual errors, ignores the extensive disconfirming evidence, uncritically accepts the folk etymology of Ex 3 and mocks the efforts of those more qualified.
In short, the name, YHWH or YH is ancient, predating it's adoption by Judah and Israel, it's original meaning possibly "blow", or "jealous" from an Arabic root HWY. Its pronunciation changed along with the languages in which it was used. The very exhaustively researched conclusion regarding the number of syllables and basic vowel sounds is that 'Yah" and 'Yahweh' are reasonable approximations for much of the time period in which the Bible was written. Regional cognates in Arabic, Samaritan, Egyptian, Ethiopic, Assyrian, Babylonian, Coptic, Greek support the Yahweh pronunciation.