"If there’s no massive cheating" is such a meaningless phrase that they could use it to mean anything afterward. "Oh no, I heard someone say that their cousin was a cashier at a store where their coworker overheard a customer talking on the phone about a letter that their post office received from Russia on election day, so obviously there's massive cheating and Trump should just be in office."
That said, I don't know that this rises to the level of "outrageous" in modern political discourse, sadly. A "foolish" position, definitely. "Corrupt," perhaps. "Morally bankrupt." "Anti-democratic." But the position is much more reasonable than most Republicans are willing to grant these days, and that's what's truly outrageous.