Its in part from that and his logical mind (killing maulers=no more people killed by Maulers) but he explains that he dislikes humanity because on his planet, everybody’s purpose in life was to make things better for the next generation (since they only live 9months or a year) and that makes him see humans as selfish beings.
Oliver being hyper intelligent though is what made him so callous towards human and other species similar to Robot/Rudy/Clone Rex.
Its in part from that and his logical mind (killing maulers=no more people killed by Maulers) but he explains that he dislikes humanity because on his planet, everybody’s purpose in life was to make things better for the next generation (since they only live 9months or a year) and that makes him see humans as selfish beings.