There's definitely a lot of fear mongering and ignorance about firearms out there but full auto most definitely increases lethality both in terms of a single target and in terms of hitting unintended bystanders.
You say that life isn't a movie. Then you say that people who need full auto have a "skill issue"? Christ dude, life isn't CSGO either. You're right that many shooters probably aren't that skilled, but the takeaway here is that makes full auto more lethal in their hands, not that they need to git gud.
Nah you ain't understanding, maybe if Americans had to be trained before they are given a firearm. You know like before they get to drive a car or fly a plane. But your wrong, lethal is binary you either are dead or not dead. You are never more dead than dead. Try to argue with logic and not your heart homie. If a gun has 30 bullets the maximum amount of lethality is 30. Full auto or not. It doesn't get more dangerous because you are a bad shot. There is not multi round bonus lol.
The point of full auto is to improve hit probability, not increase lethality. There absolutely is a multiround bonus, and 3rnd burst has been used by every major military for this exact reason.