Meg I have to disagree a bit.
It is indeed a good question, generally- are we in fact weakening the animals we are producing by selective breeding? The answer, I imagine, is definitely. I think that cutting an egg is just throwing a match into an already existing inferno.
Morphs are not really a natural occurrence- they happen, but few make it to adulthood... let alone multiple morphs in one snake...
Beyond that, most snakes in captivity don't have to deal with quite as may parasites, they eat f/t, we decide on pairings based on personal preference and not natural selection...
In short, the animals are already not good representatives of their wild counterparts- they are hatched to be pets, and there’s nothing wrong with assisting another one into the world.
Also… say you see someone about to die- you can stop it, but that person may be on his way to kill a child. There are always question marks… my personal belief is that if we are capable of helping, we should do so.