Of course, this always results in collateral damage. You even admit it yourself by fantasizing of killing "every normie." But to consider warfare immoral because innocent people die is juvenile.
Mao said that the guerrilla warrior is a fish swimming in an ocean of peasants. In much the same way, bullies swim in an ocean of normalfags who won't do anything to challenge or confront them.
So are these people really innocent? Did the thousands of German civilians in Dresden who got incinerated by the British and Americans have the courtesy of being considered invalid targets?
I neither condemn nor condone going ER. It's just something that happens when incels get driven to the breaking point, so society would be well advised to listen to blackpilled moderates who understand the reasons for it and advocate for non-violent change. Because those who make peaceful revolution impossible will make violent revolution inevitable. It's just a law of nature. If you allow oppression to persist, there will be ever-increasing forms of resistance to it. There's nothing you can do besides addressing the underlying issues. And if you don't want to, you are at fault. In this sense the bluepill is what causes people to go ER, not the blackpill.