Why is this considered acceptable?

[sirtalis]

so if I kept a tegu in a 10 gallon critter keeper or a green tree python in an aquarium people would call me out but (no disrespect intended) but the norm for ball pythons is a tub like in the pics, usually a bit bigger. I've heard that they do well in a small space but many people who keep their ball in a large bio active cage gave very healthy large ball pythons that explore and eat regularly (when properly set up) 2000-gram-07-female-pastel-ball-python_28251.jpg I mean really?