I have to say that I would like to know where you get your information from? You are right about killing a female and you kill a baby kangaroo but you have alas missed some information out. The baby kangaroo you are referring to is the “at-foot” baby yet you didn’t mention the “pouch” young who have their heads bashed in with a heavy object or have their heads chopped off.
When a kangaroo is killed in the “bush” it is then hooked on to the back of a truck and driven around all night in the dust and flies before it is placed in storage. Russia up until recently the importers of some 70% of all kangaroo meat has banned the product on health and hygiene reasons.
When kangaroos are killed in the “bush” for their skins, no one checks that they have been shot correctly and the meat is just left in the field! Hardly efficient! Before you ask I have been to Australia many many times so I know what goes on. This is just the tip of the ice berg and a lot of what gets written by the industry is very misleading.