As far as I know that is the danger of power feeding. Snake grows very very quickly, but it can lead to problems later on. I've seen on some sites (probably that one) that "somebody has determined that is impossible to power feed a young bp". I'm not saying that the vet isn't credible. It's hard to say for sure.

I don't think stuffing a snake to "bursting" is healthy, do you? Personally, I think you can powerfeed a bp, and it's not healthy.

Feeding once a week is fine, however.