While I don't personally enjoy breeding snakes commercially to sell, I don't see anything wrong with those who do so ethically. After all, don't we all love to have good breeders to source c/b pets from? Breeding snakes is a lot of work & an investment of time and money- with all the potential losses that farmers face, & while there are some who don't care about their animals as we'd hope, I think they're in the minority & it doesn't sound to me as if Mike Wilbanks is among them.
I don't think this bit of research truly crossed any lines, ethically speaking. I can remember hearing about some guy who was trying to breed & sell snakes that just couldn't be bothered to give the snakes water bowls ("so they wouldn't spill water & mess up the cages"!), much less any other quality of life (like cleanliness). The snake-equivalent of a "puppy mill". I do have a huge problem with that. But not this, not as this was explained.