Why?

[mainbutter]

The reason why is when the breeders first started introducing the co-doms they never mentioned anything about hets. As of recently everyone is now starting to call them hets. All your recessive gene snakes have always been called het. I have talked to a few breeders out by me such as evan stahl who also disagrees with calling the co-doms het for something since they were not called "hets" when first introduced.

I just wanted to point out:

I hope you know that "when breeders first started introducing co-doms", they are using the term "co-dominant" incorrectly. Stop listening to "those breeders", practically everyone uses terminology incorrectly. I know that I have been guilty of it as well, but I actively make an effort to correct myself.

Instead of buying into the pseudo-genetics language that has arisen from a lack of proper knowledge about modern genetics, I heartily advise that you pick up a book on genetics, or AT THE VERY LEAST spending a day on wikipedia.