Because the Bills lost yesterday to Joe Burrow and you're answering this question using Tom Brady lenses, I think that on this day we probably have the same answers. I will add
Either being a coach/player's son or being film-obsessed to the point that they can overcome the lack of early coaching. Joe Burrow's dad was a DB who had a cup of coffee in the NFL, played in the CFL, and was the DC at Ohio University for fifteen years. You don't think that plays a role in Joe's ability to read a defense? You don't think that Archie taught Eli and Payton to read pressures and coverages while he fed them their mashed peas? Tom Brady and Mahomes watch film to overcome this. Josh Allen plays golf and hosts Halloween parties.