Chief Keef is not Flocka.
I want to illustrate something smarter, but to imply that Keef is just some sort of Flocka substitute is stupid, so why bother? Keef is a 16 year old playing with a genre that Flocka pioneered, but he's also developing rapidly, and by the time he approaches Flocka's age, there's plenty of indicators that he could even be superior. He's just as charismatic, has just as good an ear for beats, and a great hook sense. All he needs is bar development, some twisting of the flow, and yeah.