Nomesora, how is it a theory, if it has multiple citations? Rashbi was nistalek while revealing tremendous secrets of Torah, and we’re celebrating those revelations which lead us towards geula (as is known the quote about the Zohar). But hey, if you find Lag Baomer Meaningful for other reasons, please share.
I forgot that The Rebbe chose Lag Baomer as a parade day to inculcate Jewish pride, and that’s another theme of the day today in Lubavitch.