[kehrin]

It's far more than that. The OP said "you know exactly what" - and the comment disproved that, by not "knowing exactly what". Also, how is the comment supposed to refute a negative? A negative that wasn't even a claim to begin with but rather a vague gesture towards some conspiracy (?).

[z3c0]

And I am refuting the refutation by "knowing exactly what". Turtles all the way down.

Do you see how silly this is yet? The comment you are defending is - logically - about as valid as not saying anything at all, which is exactly what they told the OP to do.