It WAS a disprovable hoax, but certainly a rumor that NO RNC rep (the job of Princess Prius), NO Republican (except for perhaps Jeff Sessions) and certainly neither McConnell or Ryan made ANY attempt to tamp down. By not doing so and dismissing the rumors, the RNC-GOPe tossed kerosene on the MSM tire fire, and they knew it.
The sooner Trump accepts the notion that the RNC will NOT help him financially or creatively, and instead only will be using him to help THEM raise RNC funds, the sooner he needs to self-fund and put together a the best people for the job. He can't allow Hitlery to gain any more momentum.
He needs his supporters to donate to him via his website, forget the RNC and raising money for them. They don’t intend to spend that money helping him it appears.
Why anyone thinks he should self fund the general campaign when it has never been the tradition is beyond me.