That is simply not true. Violence is the last resort, and many movements were successful before that. Violence can be effective, but needs to be measured. You must get people on your side, and you won't achieve that through murder.
Of course it's more complicated, but in general, to effect lasting change, you need widespread support and a good narrative, just look at MAGA. They didn't kill people to get into power, they were elected. Now that they are in power, they have legitimacy and can start disposing of the undesirables however they want, slowly turning up the heat.
You will rarely achieve love through hate.
https://en.wikipedia.org/wiki/Social_movement_impact_theory
So what do you propose? What are the logistics of it? How do you organize to take out enough systems to take over? What do you do afterwards?
Life isn't some fantastical action story, it's the incredibly complex reality we all live in where a single person cannot fathom all the variables therein. You are not trying to understand, you are not trying to be effective, you're just circle jerking in your fantasy world. And as long as many people keep doing that, living in some kind of hyper-real abstraction of reality, the people actually smart enough to organize and get into power will be able to do whatever they want. You're just another enabler.