Ok David,
Without dropping names(nicole knows who I got that info off I guess).
Anyway we purchased a couple of hatchies off this guy and as a person looking for value for money

I spent a great deal of time picking his brain and checking out his setup.
One of the questions I asked was frequency of feeding and does "overfeeding"produce pinheads.
In his opinion he told me that from what he has seen on the subject that owners of these snakes tend to feed prey items that are way too small resulting in this condition.
At the end of the day he could have said anything but to what end?
I'm not saying that it is correct merely passing on what he had told me.
As far as comparing animals go I doubt you could compare anything or draw a similar conclusion.Dogs,cats even people. I mean if you overfeed your baby does it develop into a pinhead(lol what a visual) or do you just end up with an obese child then an obese adult?
cheers