I would say you give V as much importance as you feel necessary. Don't judge others for doing the same.I guess you overestimate a bit the importances of V's actions, about Arasaka at least
I guess you talk about Sun ending (or Don't Fear The Reaper), so yes V assaulted Arasaka tower, but if Arasakla take a serious hit, i.e Mikoshi is destroyed and so the Soulkiller, it's thanks to Alt. Then Yorinobu still rules Arasaka and will still wontinue sabotaging the corporation from the inside as he had always planned.
So at the end, those who "hitted" (or will hit) Arasaka the most are Alt and Yorinobu, not V.
Nothing happens without V actually doing it. V is the ultimate decision maker, and someone who gets things done with the pieces others only have and couldn't have used. In many cases V is the unstoppable force that blasts way in to get stuff done.
Same if Saburo decided to blow into V's face on my watch. Not a punch, but a kick in his face would happen next. Just see how that ended up for Adam.