From the comic, I guess 'fallacy fallacy' is the name of the fallacy of declaring an argument to be a named fallacy without further explanation - but is there a name for the fallacy of dismissing a counter-argument because it mentions a named fallacy, regardless of what explanation is given? Or the fallacy of declaring a named fallacy, but giving an explanation that is not a valid example of that fallacy? (That last one may not be a fallacy if the explanation is valid...)