The problem is that the Left is now defining most any opposing viewpoint as a lie. There's "my truth" and anything that doesn't agree is a lie. The very concept of "two sides to every story" isn't even a thing to the Left anymore. That became crystal clear a couple of weeks ago during a conversation between Rand Paul and George Stephanopoulos when Stephie flat told Paul, "There are not two sides to this story... I'm standing by facts. There are not two sides to facts. I did not say this was a perfect election, I said the results were certified, I said it was not stolen. It is a lie."
So talking about voter irregularities that need to be examined, because no evidence of fraud was presented and litigated in court, and because the States certified the results, that is therefore ipso fscto proof that the election was free, fair and transparent and that claiming otherwise is not merely another side to the story, but an outright lie. The fact of the matter is, we don't have proof of election fraud, but we also don't have proof of election transparency, and there are serious questions about both.