while I would generally agree with you, you don't know what happened. he might've just slipped out when one of them was going out the door and ran off. and don't try to say any bullstuff like "well they shouldn't have let him slip out!!!" because everyone makes mistakes
It says in the op that it's an outdoor cat and it's normal for it to wander off for 2 days every now and then.
Let's make a comparison.
It's illegal to let your pet wander around on its own in normal residential areas.
Cat is property. Cat gets damaged or stolen because owner dosn't seem to be giving a forget about where it is.
It's illegal to run red lights when driving
You run a light and get your car smashed up.
Post about what a victim you are on the Internet and people get angry for you.
It's actually laughable how people go through life without any sense or logic.
How do they think the world works.