My take on it (take it for what it's worth)
There are these debates in EVERY species that humans have decided to breed. There are the "elite" that believe themselves to be superior, or wish they were, or want to be, and someone else likes something not "normal" that they have tried to breed out, or that they dismissed that someone else was sucessful with, and all of a sudden people are throwing labels "puppy mill" "crossbreed" "mutt" "Backyard breeder"
These are all common terms used to label people and destroy reputations when really the reality doesn't matter.
Most registries consider an animal "purebred" after five documented generations of verifiable pedigree. After that, they are pretty much genetically unidentifiable from their "purebred" counterparts. In establishing new breed often there are several breeds in the mix, and in SOME breeds, particularly in cats, you are allowed to outcross to other breeds or even use unregistered animals when establishing a new line.
So, my opinion on it, could it have origonated as a hybrid? Possibly
Does it make one darn whit of difference? Hell no, at least, not now, and not anytime soon
I think it is a fascinating gene sequence, and a really COOL addition to the cornsnake genetic pool
(just one newbies opinion, well new to corn snakes, certainly not new to breeding!!)