Few things make me more fearful of fraud than an insistence that discussion of fraud is beyond the overton window.
That is not what is happening here. There was discussion of fraud, it was investigated, and proven to be baseless.
Clinging to that insistence of fraud is what resulted in an attempted coup. Continued insistence at this point can only be attributed to ignorance or malice. There is no longer any good-faith reason to doubt the 2020 election results.