I was honestly wondering the same thing. But based on photos of Rainbow from a little less than a year ago compared to the most recent, along with post history, I don't think there's any question that this is a snake that is being power fed (both in terms of prey size and frequency) and is well on her way to being obese, if she's not obese already.
I really don't understand the allure of forcing a snake to grow more quickly, especially when you're dealing with something like a retic.