If you're asking about live being shipped, I can't help you with that. I feed F/T. There are dozens of places that ship F/T. I don't mess with shipping because I'm lucky enough to have a large exotics store in my area that has great F/T. I also live about a mile from the Hampton Mousery in case I need a certain size of, say rat pup. I can get rat pups from them anywhere from 16 grams up to 38 grams. I have a lot of reptile expos around here as well. That's always a good place to pick up feeders at a good price.
Not in my mind, no. If it were to be proven one way or the other, I would look at the evidence, but right now, I don't think it's been proven.