A truism:
Extraordinary claims require extraordinary EVIDENCE.
The extraordinary claim: a PED-free man runs 100 meters in 9.58 seconds and 200 meters in 19.19 seconds, obliterating his (already shocking) world records in events with documented histories of drug use among its previous world record holders and world champions.
How extraordinary is the EVIDENCE to back up the extraordinary claim? Not extraordinary at all, unfortunately.
Passing national federation or IAAF or IOC drug tests are hardly sufficiently extraordinary evidence. Many elite sprinters have repeatedly passed these tests while simultaneously using PEDs (not to mention that there is still no test for such pedestrian PEDs as human growth hormone, let alone SARMs). Anyone with even a passing knowledge of the history of the sport knows this.
If Bolt is truly superhuman, he would welcome, and indeed should seek out, the most thorough and rigorous scientific examination of his superhuman gifts. The biophysics labs at Harvard, MIT, Stanford, and Caltech should investigate, over the course of many months, his seemingly preternatural ability to gain heretofore unknown insights into human biology. Don Catlin's and Charles Yesalis's labs should spend a year investigating Bolt's ability from every scientifically conceivable angle. THAT is the level of scrutiny that would certainly produce the extraordinary EVIDENCE needed to substantiate the extraordinary claim.
How a man can go from the equivalent of a 3:45 mile (extremely good, elite world-class) to the equivalent of a 3:37 mile (superhuman hyper-freaky otherworldly), in just two years mind you, ostensibly without any illicit assistance BEGS for rigorous scientific investigation, just for the scientific insights it would yield. Bolt should seize this incredible opportunity to contribute to human knowledge.
Will he? Don't forget that there is NOTHING preventing him from doing so. Talk is cheap - he should put his money where his mouth is. But I ain't holding my breath that he will. And it ain't too hard to understand why.