* He was already a physical phenomenon at 12 years old (thoroughly tested by professors at the Norwegian School of Sport Sciences).
* He was as dominant at 12-14 years old as he is today.
* He competes as often as possible (why expose yourself to that risk if you're using drugs?).
* He comes from one of the world's richest countries, which reduces the incentive to buy advantages.
* Anti-Doping Norway is known for taking its role very seriously. They even purchased mobile homes during COVID to ensure top athletes continued to be tested, unlike many other countries where the level of testing was at an absolute minimum.
* One could argue that doping is a less attractive shortcut if you come from a highly transparent country where you are guaranteed prosperity and would become a persona non grata if exposed as a simple cheat.