@Chanwan
Sure. I'll concede that my example of his 100m progression isn't the best given his relative lack of competing there.
Bolt was of course a prodigy, and that's not what I'm doubting. He's clearly most likely the fastest man in the field if they were all competing au naturel. What I'm doubting is that he crushes a field of other genetically gifted individuals who are doping.
You say he was a 200m runner up to then—well, let's look at his 200m progression instead then.
Up until 2005 (when he was 19 y.o.), Bolt had a tremendous progression on the 200m, which one would expect given his maturation. From 2005 (or late 2004) he reaches a somewhat of a plateau though, and until 2007 his times in the 200 do not progress that dramatically. In the 2007 WC's, a 21 year old Bolt finishes second to Tyson Gay with a time of 19.91 (Gay runs a 19.76).
However, now Bolt's times suddenly make a leaping jump again, and he quickly progresses to times under 20.4, and famously sets a world record of 19.3 in 2008, and 19.19 the following year. These aren't modest leaps; it isn't like improving your bench press from 200 pounds to 210 pounds. It's making a gigantic leap when you are already in the upper limits of human performance. It's leaving other cheaters in the dust, completely.
Of course, Bolt could just simply
so far of the bell curve that he—while completely clean—crushes world class competitors who are doped, and has become a notoriously dominant world record holder in a history of world record holders that posteriority have shown to be doped. However,
it really shouldn't be hard to entertain the possibility that the dominant champ in these power disciplines, running on a team full of dopers, running against a field full of dopers, being a record holder in a line of formerly doper record holders, is also doping.