No, that misses the point entirely. The entire arc for Boba is that he is fighting that last battle for principles. Not because he's a mercenary getting paid, and not because there's a selfish underlying motive like a personal vendetta. He's doing it JUST to protect the city and the people in it. Even being a crime boss is just window dressing. If he wanted to be a proper crime boss, he wouldn't have stayed in the city, he would have holed up in Jabba's palace, a much easier place to defend. He stayed because what was really important to him isn't a title, or fealty from the other crime families, but trying to keep the general populace out of the violence.
Making the final stand off with Bane personal by making it about revenge for the Tuskens takes all the wind out of Boba's principles and just makes him another selfish git with an agenda.
I said it upthread, but Boba vs. Bane is really about current Boba battling the mercenary killer he used to be. It's a better man (still maybe not a good one, mind, but a better one) fighting a terrible man. Skilled, and terrifying, but terrible. To make that just a selfish vendetta completely changes the tone of the scene and completely undercuts Boba's journey to that point.