Yeshu, Yehoshua, or Yeshua

[Luc Lefebvre]

That individual seems to understand how to pronounce the letter. However, I've yet to see it applied in modern Hebrew speech. Do you have any videos of modern-day Hebrew speech where the letter is pronounced as the video above shows ?

Nope. As you said, it seems to be lost, and this channel is so far the only place where I've seen it used. He has another video on the noun vs verb of Yeshua where he pronounces it properly (there is still an "ah" sound, but it is a furtive patach, so if I remember correctly [it's been years since I watched the video] he had the sudden stop after it).