Will it be powerful enough to kill Son Goku?

Yeah, like most MCU villains they started committing random acts of violence as their leader “goes bad.” The in-universe MCU Senate canonically already went bad. The solution proposed by the story was to kill the flag smashers and ask the people who (I keep repeating this) are canonically responsible for the problem due to their negligence, are asked to “do better.”

They’re trying to do the impossible with this character. He is critical of the actions of the in-world corrupt establishment but also unquestioningly loyal to it. The climax of his last story was asking a bunch of senators who canonically caused a human rights emergency to try harder. He literally just asked them to try harder. That was the resolution. Also the people who were fighting for the victims of the human rights emergency that the MCU American senate canonically caused were all killed because boot-licking is framed as the “correct” way to address systemic issues. More than any other IP, I think this one is the US military’s favorite for recruiting purposes.