>>718129706 (OP)
Halo 2 is obsessed with style. All duel welding is is style.
Realistically all it does is hinder the sandbox balance. It’s not really that fun to be locked into only shooting, especially since they made all the duel wield guns piss weak to compensate for the bullet hose.
Being able to 1 shot combo with a plasma weapon+pistol is simply not worth giving up melee and grenades when weapon swaps take half a second desu.