Not unless you are a stealthy hacker who can nautralize entire squad in a mere seconds without anyone getting killed, and pass unnoticed to the Mikoshi. You know, like a thief, the title that V him/herself bring up several times during the whole game. But sure, having high disposition with a digitalized mind of a mass murderer, to be able to go solo as to not put anyone at risk is so much more logical.
As for the rest, Johnny did all of this of his own volition because he wanted revenge. It doesn't matter if it was Militech that provided the nuke or Arasaka who prevented the bomb from going all the way down. It was Johnny who set all of this in motion, because he thought that sacrificing thousands of people for his own reasons is ok. If you dabble with a thing like nuclear bomb it doesn't really matter if your itention is to just "rock the foundation" - you are using the tool of mass destruction with an enormous potential of taking lives. Not seeing a possible consequences of your actions if something goes not according to plan is not and shouldn't be an excuse. It's like with thief who when being caught on act by the resident of the house he/she is robbing in panic kills said resident. It doesn't matter that he/she just wanted to rob the place and disappear.
sacrificing thousands of Arasaka employees? whom were sent a message to evacuate the tower? Who are Part of group who have literally spread bioplagues through major cities, dropped orbital meteorites on people, a land war, tanks in middle America, and battles in the middle of the streets of night city?
you also realize Alt kills everyone in the building once you plug her in right? If you side with hanako, Arasaka has a huge cleansing where yorinobu's faction is essentially eliminated (one of the 3 largest factions in Arasaka)
Regardless, you the superhacker destabilized the corporate balance, and it is suggested a new corporate war between Arasaka and Militech is a likely result. Do you take the same responsibility you hold Johnny to? I mean at least in Johnny's time it ended a huge war, V the only goal was to save his/her own life.