He's a clever young man.
Near on 15 something years ago... 5.12 was about where I topped out. 5.12a would let you place at a competition... 5.12 c/d was usually the final. 5.13 was the best in the world level of climbing.
I think Sharma put up the worlds first 5.15 not to long ago... and 13 and 14 are still pro-level climbing.
I don't know the count... but this route he just did still makes some headlines when done with a rope... a few dozen ascents maybe?
I used to free solo 5.6-5.8 here and there. It sounds risky but it's really not as bad as you think climbing that many levels below your best.
Benching 250lbs sounds like a lot, unless you're one of those record holders who put up 750+ (forgive me for dabbling in that reference).
So this wasn't a typical free solo... done several grades lower... this was right up to edge of what the best in the world climb at the moment.
That said...
My brother was an idiot (a bold mountaineer). But he was physically a better climber than me by a few grades and won several comps climbing at 12 c/d and a 13a or two. I let him lead climb once, and only once.
I'm an old mountaineer... always held back just enough to never get in serious trouble. Granted I'm a Midwesterner so there wasn't too much trouble to get into either, lol.
This dude is not bold, believe or not. He's an old hand with a level of mastery mentally that is unreal. Physically he is one of the best climbers in the world, but not the best.
I used to paint houses and run crews for that college pro painters company. The most common cause of falls off ladders was bee stings.
You have to have the mental fortitude and physical control of your reflexes when poised on a ladder not to react; as the reaction is what causes the fall.
I guess that's the closest relatable thing I can think of to what Alex is doing.
Never having been one personally... perhaps a combat veteran might have some baseline of comparison more accurate. Falling off a ladder sure as hell ain't life or death.
He's physically reached the point that 5.13a is within his level of ability to climb without error. That in and of itself is something few folks can claim in the world. It's one thing to work a climb over and over until you finally send it... this is a three hour marathon during which you pause for a few places to concurrently complete a couple sub-16 minute 5ks, a few 60 second quarter miles... without rest, aid stations or water.
Mentally though...
World class surgeons perform very complicated life or death procedures at this level of focus... with a team of assistants and only their patient's life on the line- not their own.
An Olympic level gymnast's floor routine is a few minutes... this is memorizing a 4 hour routine and executing it with zero margin for error, no music to follow, for a perfect 10.
A chess game is typically 30 moves or less... this is hundreds of moves over 3000' with some crux sections where only one very specific sequence will work.
Even to simply sit and meditate for 4 hours on a comfy mat in a comfy place without loss of focus or clarity is rare among practitioners of that art.
To do so while in motion, performing a very complicated, very specific set of physical tasks, exposed to wind, sun, and any simple coinflip of chance interaction with the natural world... that is Dali Llama levels of mental acuity.
This isn't just balls from this dude... this is mastery on a level rarely, if ever seen.