Getting back to that list of eggcorns:
"Duck tape", despite being a current brand name, is almost certainly the original. It comes from the material it was made from, cotton duck, and/or the fact that it was used on board amphibious "duck" vehicles to waterproof cartridge cases and patch small leaks. It has never been a preferred method of repairing ducts.
"Buck naked" goes back centuries. "Butt naked" is not attested before the 1960s.
Many of the others seem to have their origin in deliberate humor, and in at least one case ("daring-do") a modernization of archaic spelling.
I don't think any of us are immune from eggcorns. It was only a day or two ago, reading a post elsewhere on these forums, that I realized tenderhooks are really tenterhooks.
And if I may be allowed to go all Grampa Simpson for a bit, it reminds me of the film "The Devil's Rain". The marketing people were apparently illiterate, making heavy use of the plug line "Heaven help us all when The Devil's Rain!"