I believe you have to be born with ability to play or learn to play at a level like that. I've had guitars for 45 years and never could get to a level like that. But then I had a friend when I was kid that could do a decent cover of Hendrix. I can only play bar cords or open D now because many years ago I got my hand caught in a fan belt while working on a semi truck. I have some fingers that don't bend or have any feeling in them. That girl has a lot of people looking at her. Shes had 4,277.980 hits in 6 days.
Django Reindhardt only had two functional fingers on his fretting hand and he was very good. This in turn inspired Tony Iommi of Black Sabbath, who lost two fingertips on his fretting hand in a factory accident. He simply made these wax/leather fingertips for himself, used a lighter string gauge, and tuned down the string, and he did just fine for himself.
You're right some people are just born with it. I've been playing bass for twenty years, and while I'm a good player, there are levels of technical proficiency I'll never reach, and I'm OK with that. Speaking of Black Sabbath, the best musical advice I ever received was in an interview with their drummer Bill Ward. He said something to the effect that he doesn't focus on what he can't play, but only on what he can, and he builds from that. Once I took that advice, I became a better player overnight and developed my own style.
My brother, like that girl, was playing technically proficient solos at 6 months of experience when he was 12. He was born with technical proficiency. But a lot of these guitar guys I know obsess over the fact they can't play like some monster like Steve Vai or Yngwie Malmsteen, and I always try to remind them of that Bill Ward advice.
