That's not the same song you were singing earlier with your "just don't feed them in their tank." comment. You even flavored it with "it's that simple" when in reality and you are even admitting, it's NOT that simple. Cohabiting in snakes especially, and especially ball pythons, carry lethal risks. Just because you've seen some done successfully doesn't mean it's a general safe practice. For all we know everyone else has been really lucky in their dice rolls, and it's a matter of "when" rather than "if". It's a dangerous game.
Please consider not presenting it so dismissively in the future as new keepers may take your word for it. Or if you're going to present a counter argument, try offering a more relevant video to support your facts better.
I meant to avoid them striking one another while aiming for a mouse it was simple to just not feed them in the same tank.