Jesus' name in Hebrew/Aramaic was in fact J^SHU^. So why is this necessarily an acronym for that phrase? Is there some history there that I am unaware of?
His name would be closer to “Ya(h)shu’(guttural)a” in Hebrew. Yeshu is the pejorative shortening of it to remove any connection to the divine personal name of God the Father that forms part of its stem. It was also used as a code name to write polemics against Christ in Rabbinic literature and as an acronym for “May his name/mention be blotted out.”
See:
https://en.m.wikipedia.org/wiki/Yeshuhttps://judaic.princeton.edu/about-us/resources/toledot-yeshu