+1
To add to this, Coe sees Bolt as key to the sport's redemption also (but wishes he ran a bit more frequently to promote the sport).
Bolt could be clean - I don't know - but here are additional things that make me unsettled. I admit that these things may not bother others, but they bother me a little bit.
1) Bolt, as a clean runner, does not take a strong position on doping, despite it harming the sport. He will still hang and train with dopers.
2) The top 20 100m times ever have been run by convicted drug cheats (excluding Bolt)
3) Johan Blake's ability to run 9.6x (100m) and 19.2x times (200m) show that Bolt is not a complete outlier
4) Bolt seems to visit a certain doctor in Munich at the same time (almost to the day) every year before major championships. He was first sent to see this doctor when he was 16. No smoking gun, for sure, but we know that this guy administers actovegin, animal blood, and stuff he will not mention to his patients.
Anyway, I'm not going to criticise Bolt if he is 'tuning' himself. It's not like the others aren't, so that still makes him the GOAT. It's just the 'level playing field' isn't what Joe Public thinks it is.
Same reason I won't demonise Gatlin. He just was 'unlucky' enough to get caught.
The high number of positives among the elites over the past 25-30 years show that the 100m is a very dirty discipline. And keep in mind that testing doesn't catch all the dopers, only some of 'em.