Coordination, motor skills and spatial awareness can be learned and developed by anyone. You go on to claim that technical skills are different, and that they are specific to the sport. The aforementioned physical qualities are also specific to the sport, they aren’t as general and transferable as you are making them out to be. You can learn them to a greater extent in a general sense if you play a variety of sports as a kid and you really ingrain fundamental movement patterns. Those things don’t make someone a good athlete, they make someone with fundamental movement quality. You’re getting confused because you’re conflating that with athleticism. Athleticism is the intrinsic quality of speed and explosiveness, the natural ability that you largely have or you don’t have. It’s genetics, it’s not teachable coordination and anticipation in a particular sport. You think that’s too simplistic but that’s what it is, and that’s why you’re getting confused. Think about it as nature vs nurture. Mikey Garcia is nurture, an average athlete but he has good technical skills and fundamental movement (balance etc., the things you think are athleticism). You can see that he is slow, but he is well trained and grew up in a boxing family so he knows the game and can anticipate, so his timing helps to compensate for his lack of athletic ability. Gamboa is nature, powerful and explosive. Wilder is nature, powerful and explosive. You know that athletic quality when you see it, those guys stand out and can succeed despite plenty of flaws, and/or inexperience in the sport. Then you have guys who are exceptional athletes and then also develop all the fundamental stuff (the things you think are athleticism but are not), Lomachenko or Lebron in basketball.