Anti-personnel land mines are not a war crime despite doing exactly the same thing: Killing indiscriminately in a selected region. They're even worse than autonomous drone attacks in that they will continue to kill for decades to come.

The only thing banning them was a convention Russia never signed, forcing Ukraine to withdraw as well.

I don't see the difference you do. Especially the monitoring is not possible with an autonomous attack. Again the bomb and missile are autonomous once fired. Same thing about the operator not know who or how many were killed. Heck there are whole sections of war stories with bombers not knowing who they killed. You certainly can't stop a bomb or ceasefire it once dropped but it can be explodes early as can missiles as can drones.

on the front line of the Ukraine war.

Killing soldiers on the front lines is not killing indiscriminately.

However, we do not use fully autonomous drone systems that independently select and engage targets without any operator involvement,” says Polozhukhno.

So your accusation is completely invalid!