It's not obvious to me that this is a good thing to have. I predict that its primary usage will be as a generator of fully-general counterarguments: people will use it to look up how best to defeat their opponents without having to exercise any thought at all. There's a reason that the "fallacy fallacy" is on the list.
Ya, a reply with a pure "that's F(4)" makes the same mistake (sidestepping the subject) it's pointing out.
Some rely on hijacking common sense. The slippery slope for example, I'm 95% sure it's the most common "pretend it's fallacious" reply, even though it's actually "by no means invariably fallacious" because it is a physics problem, and the grey area between it and political incrementalism (for example) starts with true, not the opposite.
