If they said the money was used for paid trolling that would help. It didn't
A better comparison would be voter fraud. Your evidence points to conspiracy, but no evidence it occured.
My thoughts too but as I pointed out earlier, I think that actual voter fraud is several orders of magnitude more serious than paid trolling.....
Wrong, it would be more like "we cannot be sure there was voter fraud until someone provides evidence of voter fraud"*. Suspicion of fraud isn't sufficient, especially if the source of those suspicions is very biased. Allegations of a slush fund to pay for voter fraud is more damning, especially if true but again for the case to be proven actual instances of fraud would have to demonstrated (after all, the fund could have been frittered away on other matters).
* - except obviously allegations of paid social media contributions are several orders of magnitude less serious (not even being a crime AFAIK) than actual voter fraud.