> Wow, seems like the people who voted for a candidate who said that mail-in voting was a hive of fraud for six months before an election were less likely to vote by mail, leading to a huge number of mail-in ballots being cast for the opposing candidate. Odd.

That isn't what they are complaining about though e.g There are saying that some areas have very high turnout (over 95%) in specific counties. Even in countries with mandatory voting you don't get past 95% of the population voting. I haven't looked into these claims myself. So I have no idea if they are true.