I'd be careful about listening in and passing judgement on other peoples conversations. You can often get misinformation and come to the wrong conclusion.

We are talking Ball pythons right? Just because food is offered doesn't mean they will take it. All my animals were chow hounds as hatchlings- though I never fed them regularly more than every 3 days, but come to 500-600 gms Most went into adolesence and went on hunger strike. Every animal is different. Experienced breeders observe their animals, and know which
animals they can push a little more...
You can plan as much as you want, but in reality the animals will regulate themselves... it seems to me, the hatchling that you most want to eat and get to breeding size is the one least likely to cooperate... and just because they reach breeding size does not mean that they will actually breed and produce viable sperm/eggs. Murphy's ball python laws.