why of all the animals, the bonobo serves as the main insult in LoL community? They are wonderful creatures. Very social, nonviolent, hypersexual. They make and use simple tools. They know the concept of cooperation. They get along nicely with each other in merry, hippie-like groups, where everyone is bisexual, and any tension between any of them is delt with by making love instead of war.
They also can understand some concepts present in videogames, like this wonderful specimen over here:
why on earth we insult each other with "bonobo'?