It depends on the "demand" of the sport. For example young competitors are not so competitive in disciplines, where the emphasis is specifically on endurance. Because consistent endurance is something, which takes longer to develop and train to a very high level, as opposed to simple power or speed, which lasts in shorter amounts of time, or is delivered in separate spurts/sprints.
F1 nowadays though... is not so much an endurance sport any more, although it still demands consistent 1,5-hour effort without breaks. I think he could manage it, but I still don't think F1 is that particularly easy for young athletes to adapt to.
It´s true what you say: in endurance sports it takes longer to peak, and you stay up there longer. Speaking in a general sense, because then tehre are weird individuals. I mean, there´ll never be a 18 yo TdF winner.
But F1 is not an endurance kind of effort at all even being generous. Its cardio aspect is not especially demanding, and the limiting factor are neck muscles, which just take some specific conditioning to build.
Only a month to go for road cycling World championship. Juniors will race around 130 km, which is over 3 hours for them, 3 hours averaging around 40km/h at around 175 BPM average. They´re 17. If they can handle that, and what awaits for them in their first pro year aged 18, which is a living hell, they can handle F1 racing.