If it was an isolated event, I would heartily agree with you. But it's not.
Interestingly, Judaism has never been a "propigating" religion, like Christianity or Islam, and never sought "converts" at the end of the sword. You were either Jewish, voluntarily converted (which was resisted) or not Jewish.
Unlike most all other religion, Judaism is fine with non-Jewish people not practicing Judaism.
So I guess you meant Joshua and all those folks having fights during the Bronze Age and early iron age.
Certainly the earliest Jewish people of the Bronze Age picked fights with neighbors (and vice versa), but nothing usual about that in the Bronze Age. Rough time all around. The only thing different is we wrote our history down, warts and all.
And, of course, the primary people we fought were the Caananites, a people so foul, they like to boil children in their mother's milk and sacrificed their own children to Baal. The Eqyptians had quite a bit to say about them. Interestingly, "Baal" was a fire demon with horns, and is where Westerners get their common picture of the Devil.
And the Philistenes, a sea-faring Greek people from Crete, who were the Mediteranean version of Vikings. They raised heck with the Eqyptians, too. They liked to topple Eqyptian monuments and generally be pricks, in addition to raping and looting.
As an aside, this where you get the word "Cretin," being big, buffonish, thugs. Which is pretty much what they were, at least when they were abroad raising heck.
So, no, Judiasm was not "propigated" in blood. Again, we have never sought converts and certainly not unwilling converts.