Nope. Tons of climbers climb as hard, and scary things as he does, in fact much harder he wouldn't be able to climb, probably ever.
He doesn't behave the same, where normal climbers would freak out and do a fatal mistake he repeatedly remains calm as on sunday tea party. You can train some resistance to fear of death and indeed all climbers do (myself included), but almost everybody hits some wall within their current skills. His wall is way further than almost any other climber. Not that he is the only soloist, far from it.
Alex put a lot of effort into this feat, which as far as I'm aware no one else ever seriously even attempted to train for. Listening to him speak it is obvious that he has closer relationship with his own mortality than most people, even other extreme sports enthusiasts. I think it is too convenient to look at someone like Alex and try to attribute their accomplishments to them being a freak of nature in some way, as opposed to being a normal person who just dedicated themselves to the problem more than anyone else, not to mention that it is doubtful our understanding of neurology is even good enough to make such claims in the first place, so I remain skeptical.
He doesn't behave the same, where normal climbers would freak out and do a fatal mistake he repeatedly remains calm as on sunday tea party. You can train some resistance to fear of death and indeed all climbers do (myself included), but almost everybody hits some wall within their current skills. His wall is way further than almost any other climber. Not that he is the only soloist, far from it.