I would think that the Kingdumb maladies are of such rubbish quality that it makes no sense to steal it. It would be like hacking into a bank account to steal 100 toilet papers when a sheet of regular toilet paper costs a sesagillion money-toilet papers. What they really mean is that the witlesses are not to take a Kingdumb malady and remake it so it is actually enjoyable, perhaps adding a rock or rap beat.
Now, that doesn't work in reverse. I remember the [old] Kingdumb Malady 42 (the old version, from Sing Praises to Jehovah) was a blatant ripoff of the Vangelis song Chariots of Fire. The song was recorded in 1981 and came out in the early spring of 1982. The Kingdumb malady was recorded sometime in the realm of later 1982, 1983, or early 1984 and released at the Grand Boasting Session of 1984. Nice try, Washtowel--you ruined a fine song.