No bashing intended. There was a fairly recent poll thread asking who fed where and how many of their snakes had cage aggression. The number of cage-fed aggressive ball pythons was very low, especially in comparison to all the cage-fed non-aggressive ball pythons mentioned. If you can't see the snake and it's food, you don't know what's going on inside that box, and bad things can happen. And why would any animal develop a human-food association when you keep the two completely separate, rather than when you associate them for it?
I'm sorry you feel bashed, but it is a completely unnecessary practice which has no real foundation. No, it doesn't need pointed out to you every time you mention it, but there are so many people around, we can't all keep track of who we've pointed it out to.
Not the friendliest post, I know, but I'm sorry, ok?