"Defense attorney KeriAnn Brady described the shooting as an accident that changed the lives of two young men forever. Brady also argued the state correctly resolved the case through the plea agreement." 
She is right, the murder DID change two lives. 
One of those lives is dead and gone. He has no life left to change.
It also changed forever the lives of young Tate's mother, family, friends and community.
I won't try to predict the perpetrator's future but I hope for the sake of society that the "plea bargain" he was given will not result in the loss of anyone else's life.
 I sincerely hope for all concerned that the perpetrator will makes changes in his ownlife and do positive, meaningful things to the benifit of others. He owes the world another life.