It's a distinction without meaning, and even if we allow for it, your position still categorically fails across all of human history.
You have zero basis for any of this. The entire body of human history and human anthropology flatly rejects your hypothesis, producing contradicting examples in basically any population, given the two small caveats that said society must last more than a single generation (so we can exclude, say, the Nazi Reich as a culturally distinct "thing"), and that we need to actually have enough evidence about a given society to comfortably make any claim either way.
You have no evidence you can present, because your claim is simply false on its face.
You'd have us believe that everyone too old to labor in the fields was customarily put to death, historically? That artists were killed on sight unless they were actively working for a client? That students of all kinds were not tolerated? That children worked from birth? That no one was given any chance to heal for illness or injury?
Your position is absolutely fucking ludicrous. You're pushing a sociopathic view of the human condition that does not reflect reality. It only reflects your inability to grasp basic human compassion and empathy.