Another objection: You're using rational categories to refute an argument which purports to deny their universal applicability.
My response: Both objections and answers can be intelligible only by using those categories. Hence, the objection is self-contradictory. Therefore, it's invalid.
And if anyone thinks they can formulate just one objection or answer without them, by all means let me know. Just try not to slip back into that nasty category habit in the process, ok?