Feeding in seperate enclosure

[AS_Legion]

I was at a breeder (ball pythons and corns) over the weekend that also breeds his own feeder mice and rats. After we talked for a while I mentioned that I want to get a larger snake, either a BCI or a CCP.

The breeder said that they used to breed with them but stopped as the snakes (under his opinion) will always get aggressive and start biting when they are older.

Just before leaving, the breeder mentioned that I should use a seperate tub to feed them.... and this got me thinking... could that be the reason that the snakes got aggressive?

I am fairly new to the trade but always fed my snake in its own enclosure. Also a lot of people say that tub feeding is 'old school' and has since proven wrong.

What are your guys' opinion on this? Could the tub feeding make larger (normally more docile) snakes aggressive?