If everything's designed, why waste time with worthless stuff like irreducible complexity? Why do you need to look for IC to spot design if everything is designed in the first place?
At least he can back up the claim of being able to tell the difference -- there is none. That ends the controversy.
IC is simply a numerical, logical, mechanical fact, so get used to the "waste of time" (as if you even know for certain what time is). Who designed the universe and for what purpose is generally the object of theology and philosophy. By and large, however, since science operates within laws created by God, it is something of a joke to watch its attempts to remove or explain away the One in Whom we live, move, and have our being and still call itself "science."