Before this turns into another "round and round" session of "you're wrong and I'm right", maybe everyone can agree to disagree? People will care for their animals the way they see fit, and nobody else is going to change their minds. If the animals on both sides of the argument are healthy then what's the big issue?
I see ads from breeders all of the time for 3yr old bp's that weight 500g. IMO those animals are fed less than they should be (unless it's just a problem feeder). I don't knock them for it, and it would not stop me from purchasing an animal that I really liked because I would slowly change their feeding schedule. I would not tell that breeder that they should feed more (or less) because it's their animal and it's still healthy.