ROB:
As usual, you inadvertently serve to only discredit your idol instead of “helping it”. As a bonus, you seriously strain credibility of your usage of the word “rabbi” in your name.
Bar Kochba is known as “Bar Koziva”; in other words, a fraud.
Rivers of Jewish blood (literally) were spilled as a result of his rebellion, due to the violation of the oaths.
Rabbi Akiva backed Bar Koziva precisely and only because he fooled Rabbi Akiva into believing that he, BK, was Mashiach, at which point the oaths would no longer apply.
Your implied assertion, from BK’s war having happened before the gemara was compiled, is absurd.
The prohibition was merely recorded in the gemara then, not that it was any secret until that point nor was it not in force until that time, of course. The binei Ephraim (who escaped the inescapable Egypt) were nonetheless ch”v killed en route to E”Y when they violated the Oaths and left Egypt early (due to a miscalculation, of course, and not, CH”V, as an intentional rebellion).
Finally, your utter disregard for Rab Hirsch’s words is also distasteful.
The Zionists have no answers for their heresy and idolatry, and make themselves and their idol look silly when they try to defend the indefensible.