That is your interpretation. And I admit, I can see why you'd come to it, and in other circumstances I might be willing to try it.
But in these circumstances, I don't give a shit about how narratively satisfying it would.be to counter Justicar with Justicar. I just want Socialite Butterfly dead, and I consider Shutdown to be a better path to achieving that because his power doesn't have the reactive component Justicar's has. If we want narrative satisfaction, we can find it in the fact that Socialite worried to use Shutdown against is in this fight, and now we're doing something similar but better.