Well, the first scandal broke via admissions of some cyclists, and the second because dirty syringes were delivered by Graham, after Balco ran for 14 years or so.
Putin? He would likely keep the information quiet, and use that to blackmail Coe.
No, I am not saying Coe got his infection that way; that infection is just one more reason to "suspect" him. Again, it was legal, so...
The first fact, if actually true (see Radcliffe and Farah for example), can be rewritten (EPO legal?):
The fact that British runners got slower when serious testing for steroids began, suggests that...
Your second point is another lie that you keep repeating. In fact, the only non-African mid- and long distance records that didn't get broken are Coe's 1:41 and Jarmila's 1:53, maybe coincidentally, or maybe because roids are more important for the 800 than for the longer distances.
I didn't say it was proof.
He attacked Seppelt for uncovering the truth ("declaration of war"), he tried to ruin Ashenden's and Parisotto's reputation ("these so-called scientists", "breathtaking ignorance or a level of malevolence"), had various shady CSM dealings, mixed his different jobs (Nike and IAAF VP) and then lied about it (plus decade-long cheating on the wife).
Here from the BBC 2015:
"When asked about the allegations, Coe told the BBC he "did not lobby anyone" over Eugene's bid, but "encouraged them to re-enter another bidding cycle as they had a strong bid".
...
A BBC investigation has uncovered emails which claim Coe - an ambassador for sports giant Nike and then vice-president of world athletics - "reached out" to Lamine Diack with his support for Eugene's bid.
...
Diack announced a surprise vote on whether to bypass a normal bidding process, and simply hand the 2021 games to Eugene."
Nothing to see here, just some friends supporting each other. Lol.
And here,
https://uk.reuters.com/article/uk-doping-britain-report/sky-and-wiggins-crossed-ethical-line-uk-parliamentary-report-idUKKBN1GH04JOh, and let's not forget that he fights against transparency and against criminalization of doping.
Doesn't look like he is "going a long way to cleaning up athletics".