Interesting! Does she have the xrays published anywhere...I looked through her site and couldn't find anything. Not necessarily doubting her but I fail to see how the spines would not be affected. Tails are an extension of the spine, they're not separate -so how would one potion of the same thing be so, so distorted while the other portion remains unaffected. It doesn't make sense to me.
Also, let's say for the sake of discussion, that this is true. Genetically, the spines are normal and the tails are kinked. How would that fare over time? Since they are so reliant on their tails for balance, the body must find some other way to attempt to maintain balance, if it no longer has the tail. So how would this affect the body as a whole. Would straining, jerking and other movements attempting to keep balance cause other injuries or, at least, make the animals prone to injury? Would something like this perhaps cause spinal problems (I mean like, the unnatural positions and movements of the rats compensating for the lack of tail being similar to how many people these days are starting to have back problems from the sheer amount of time we spend hunched over phones and computers.) How would you look for something like that in rats. They're so good at hiding pain and discomfort, how would we ever really now how it feels for rats to be doodle tailed. They would likely never show any signs of a constant, omnipresent discomfort such as back pain.
While I do agree with her that there is always resistance to 'new things', just because we grow accustomed to them over time, doesn't necessarily mean that they become acceptable -it just means that the metaphorical ship has sailed and there isn't much point in discussing whether or not it ever should have been.
And this isn't even the case: I mean, look at hairless rats. They've been around for ages but it's still fairly common knowledge that they shouldn't really be purposefully bred.
I see this discussion all the time on reptile forums because there are 2 types of breeders. There are people who breed for health and there are people who breed for morphs (different shapes, sizes colours etc.) There is a constant battle amongst morph breeders who are always taking advantage of the slightest mutation and trying to turn it into the next, big morph. However, doing this always involves inbreeding, which in never a good thing.
Inbreeding may produce 'cool' mutations but these mutations never ever benefit the health of the animals. There hasn't been enough time for these negative effects to show up within reptiles yet (morph breeding has always been around but it only really exploded in popularity about 15-20 years ago. There haven't been enough generations of snakes to really see what's going wrong inside, but something definitely is.
Proof: Look at dogs. Every single breed has been inbred to show certain traits. Purebred = inbred. Bulldogs are the best example. Horrible respiratory system, faces prone to infection and fungus because of all the folds of skin, skeletal deformities such as bowleggedness and the characteristic underbite, ridiculously oversize skulls, so much so that they essentially cannot be born naturally any more, the list goes on! Yes, Bulldogs are freaking adorable but that's not the point!
I guess the point I was trying to make, before I went off on a tangent about breeding was, while I am not against change and progress, I fail to see how purposefully breeding for mutations is anything other then selfish curiosity. As I said, it has been proven over and over and over again that mutations do not ever benefit the animals, they just make them different. I know it all comes down to opinion but if I was a breeder and any of my offspring showed mutations, I would question my ability as a breeder.
That being said, I would be interested in seeing any of this research she's done. It sounds intriguing, at least.