>>11776552 (lb)
If there's any chance dems will accept the voter fraud, Biden/Harris are the perfect scapegoats. Most likely to warrant the, "Dumb fucks tried a stupid steal", reaction. Easy to believe they're dirty enough and stupid enough to try it. Who was it who said, "Don't underestimate Joes's ability to fuck things up?" Obama.
Whether you like Hillary or not, she has a cult following and the cognitive dissonance factor with her would have caused more problems than with Biden.
My take.