What do you think? (I can guess, from the tone of your post). 
What do I think? Yet another attention seeking narcissist and youtube hero. You get 21 months in Aus for manslaughter so I guess he's actually getting a fair whack. Mind you, 21 months in an Australian low security prison would actually be a nice break from the daily grind. 21 months in a US prison...........yep, he probably is getting a reasonable penalty.