The problem here is that others come to this forum for best advice, & this surely IS NOT it.
What you can get away with for ONE snake is NOT a reason to recommend a method that has been tested countless times by others with real snake experience & with many snakes, myself included, and has been shown to be a bad idea.
The best reason NOT to feed snakes in a side container/cage is that for many snakes, it kills their desire to eat- at all! Snakes are shy, & handling them often causes fear, which means they won't eat. Fear interrupts their interest in food.
Even IF your snake is now comfortable being handled, you're MORE likely to get bit this way, because snakes stay in "feed mode" (pumped up to attack prey) for hours & sometimes even days after eating. Even if you get away with picking up your hungry snake to move them out of their home, you're likely to be setting yourself up for a nasty "feeding" bite afterwards when you try to put them back.
Feeding bites are where a snake is "sure" that you are prey & won't let go.

Now I'm not saying that a ball python is going to overpower you, but bites hurt, & you are likely to injure THEM when trying to get out of the dumb position you put yourself in to begin with. Furthermore, if this practice (feeding in another container) is applied to larger snakes, it can actually be dangerous- & as I said, this forum is here to promote "best practices"- that means we don't want owners OR their snakes to be injured.
Another problem with feeding in side cages is that when owners wait a while for the "feeding response" of the snake to wane, they often forget & the snake gets loose. You'd be surprised how often this happens.
Also, that side cage is virtually never "heated" & depending on your home temperatures, the snake may be at temperatures that are too chilly. Even worse, when you need to handle the snake to return them to their home, they're somewhat likely to regurgitate the meal they just had, just because of the handling.
Saying that "it's always worked fine for me" truly isn't saying much. Your recent thread "Help with ticks" (see link below) tells me everything I need to know about your lack of experience, & when you lack experience, you should come here to learn but refrain from giving advice. Okay?
https://ball-pythons.net/forums/show...=1#post2761590