Tyga is sure Blac Chyna ‘s custody play has nothing to do with parenting and everything to do with the fact he is with Kylie Jenner , and not her. Sources close to Tyga tell TMZ, he doesn’t think his relationship with Kylie is any reflection on his ability to be a good dad … and no one — not even BC — can legitimately question his parenting skills. Sources say Tyga thinks if anyone is questionable it’s Blac Chyna, whom he claims cares more about twerking than raising their son.