Wow, I really should come on here more often!
This is what i'm trying to say though, as you're seeming to be getting a little bit touchy about this topic. How many 1st time buyers go into a petshop & say... "Oh is my corn snake gazer free?" Corns get the credit for being the easiest, most docile & tamest snakes you can buy, but no one ever tells you about these things.
Most breeders won't tell shops that there snakes are ph gazer, if this thing is going to work, it needs to be more widespread than a few breeders off a website. Yeah i know there is other people doing it, but you lot killing loadsa snakes isn't going to help my local aquarium that are completely clueless about what Sg is.
I'm not going to post again on this topic because it will end up turning into a slanging, points scoring match & i'm not really in the mood for it.
I think there is no definitive answer to this, most hobbyests would probably be against it, people whos business it is to breed & sell corns will be for it.
When I found out about Stargazing, do you know what I did? I read up about it and posted about it on forums. I tried to spread the word, to let people know about it! Saying "Oh, no-one knows about, it'll never work, why bother?" is a very defeatist way of putting it. Why not tell people? Why not inform your local petshops if they aren't already aware? Send them links to youtube videos and explain why Stargazing is bad and avoiding it is good. The only way people find out about this sort of thing is if other people spread the word.
I even tried to put together some info on my website (which I never use anymore but heyho) --http://rainbowcorns.webs.com/stargazing.htm
When I think about this topic, the thing that is brought to my mind is the testing that older pregnant women go through to test their babies for down syndrome. Some mothers (not all) who's babies come back as positive can choose to abort the pregnancy, and some do. The way I feel about it is this, there should be testing to figure out what causes it, not just if a snake has it, or is a carrier. If we can figure out what causes this to happen, we can find a way to make it so its not so horrible for the animals and devastating for the breeder who's entire clutch hatches with this disease(?). Its kind of like this: someone (person) is coughing, sneezing, and throwing up; do we destroy the person because we don't know whats wrong, or do we do a blood test and find out that its only the flu, and they can take some antiviral medications? I dont think the question is whether or not to destroy an animal for the sake of science, I think the problem is that a lot of people do not understand genetics or testing. Studying the genetics is as easy as a swab of saliva, a little of blood from a blood test, or even hair (mammalia);the subject does not need to be destroyed or harmed to do this.
As people have said before,it would be ideal to have simple blood testing to find out if a corn carried the Stargazing gene. But you'd have to map out a corns entire genetic code to identify where the Stargazing gene lies/affects, and people don't have the money to get other people to find that out. And I wouldn't consider Stargazing a disease or a symptom - it's a failing in the snakes genetic code. It's missing a vital part of itself, which causes the stargazing symptoms (and overall weakness and slow growing). It's already known what causes the stargazing and the symptoms - the recessive Stargazing genes.
My opinion on it is, ProCorns, Lexcorns etc, are all doing amazing jobs. I'd hate to be in their shoes, hoping that each test clutch comes out stargazing free. Dreading a corkscrewing baby, and knowing they're going to have to do the hard thing to stop others finding the same thing in their clutches.
It's a simple recessive gene, and in the long term, all those poor babies from the testing will benefit the corns being bred in future years, keeping the captive cornsnake gene pool cleaner than if breeders just shrugged their shoulders and carried on breeding them and ignored Stargazing corns and quietly euthanizing any that popped up in their clutches.