Language is a living thing. The term "strike" was probably used because it resonates immediately with everyone, and communicates the concepts, and motivations, more effectively and quickly than any other term that came to mind for the initial poster (beckyzoole). I don't really see a problem with it being used inaccurately in this case, because the actions being taken are still, at principle, the same.

And the entire idea behind the strike is to not piss LJ off, which is why it's a refrain from doing something and not a provoking action such as spam. It's just to make a statement to LJ, which yeah, is pretty pretentious, but I figure, what the hell can it hurt? I can live without LJ for 24 hours. XD I'll get over it. Not a big deal. I generally think getting hyped up over anything is crazy, so. /o/