Sorry for the late reply, I've been on holiday for the last 9 days, just flew into Bangkok where I am a little more settled than on island beaches and moving to a new island/beach each day.
The Olives haven't changed, there have been many lies. If you stop and think about it for a while, you should be able to see that the story makes absolutely no sense. Or maybe you can't. I'm not sure, but believe me, it doesn't make sense. Or don't believe me, I don't really care.
Plenty of lies get told in the herp world, and the situation really hasn't changed. In the case of the Olives, people seem to imagine the problems were worse than they were and are now gone. The reality is that they were never all that bad and haven't changed.
In the case of the so-called macs, they will always be as bad. I've seen several breeders making ridiculous lies, often completely blatantly, with stories which make no sense. I found one ad particularly amusing, with a female sitting on her '100% fertile perfect clutch' with several obvious slugs! It was pretty funny, but I suppose he only expected to sell to the stupid, and those people wouldn't pick it, so it wouldn't hurt his target market.
Speaking of blatant lies which make no sense to anyone who actually understands genetics, someone posted a video. I won't comment for obvious reasons.
Someone said you can introduce other traits like good feeders, stripes, etc. Yes, absolutely, you can. But some traits can not be separated. Examples are jags/neuro, albino black-headeds/death(or occassional live non viable individuals), amelanistic skin/red eyes. Trying to separate these traits is like trying to breed an eyeless animal with good vision. Those traits are linked in a way which can not be broken. In the case of mutations which are single mutations, as all these examples are, the single mutation is what causes the trait or traits, and if one mutation causes two traits, the only way to get rid of either trait is to get rid of the mutation, which gets rid of both traits.
Adding two traits together like stripes and albinism is easy enough. Separating pleiotropic traits is impossible in these cases. Separating unrelated traits is easy.
Paul: No, there is no easy way to fix these problems. Or any way at all. No, I can't explain it to most laymen without spending a long time (at least a few hours with most people, and some will never get it, even if they spend years getting a genetics major).
It is, however, really, really easy to make up lies which simple-minded people will believe if it is the type of stuff those people *want* to be true. If it is the type of stuff people don't want to be true, it is often the case that no amount of any type of evidence will ever be convincing, and I've stopped caring about trying to convince people if they are closed-minded.
In the future we will have healthy albino black-headeds and Antaresia. It will be when we find entirely new mutations, not by somehow 'fixing' the existing mutations.
One thing which may explain the concept to some people, is that we don't typically just have random lines of snakes with masses of nasty problems, yet we do have some mutations which have nasty problems. This shows that the problems are caused by the mutation. These mutations are not big things which are spread all through the genetics. They are one, single, indivisible gene (sic). The only way to get rid of the problem is to get rid of that gene (sic).
Also consider that all of the Olives everywhere seem to magically have had the problem fixed! If the problem actually had been solved, it would only have been solved in isolated lines/individuals, and the majority would still have the problem. The only explanation which makes any sense is the obvious one; the story is false, and nothing has actually changed.
Oh, and by the way, the 'albinos produced from hets or albino x het are better than albinoes produced from albino x albino' is absolute nonsense. Anyone telling it is either mistaken or deliberately lying.