[af_vet_1981]

Even the name of the video is forbidden, for one is never to use any of the many names for our Creator unless one is praying, never in casual talk.

That is still a mystery to me; how could countless (well, they could be counted) generations of Jews starting at Har Sinai, hear The Name, and yet forget (at some point in our history) how to pronounce it ? I don't attach authority or certainty to the various scholarship that seems to favor a certain pronunciation as probably correct. I want to know it is as correct as the Torah text itself. How could The Name be forgotten and yet not the Torah ?

[EinNYC]

That is still a mystery to me; how could countless (well, they could be counted) generations of Jews starting at Har Sinai, hear The Name, and yet forget (at some point in our history) how to pronounce it ?

They did NOT "forget it"; it is forbidden to use the holiness of Hashem's other names for non-prayer purposes.