There is, however, one possible consideration that could have weighed in Austin’s favor in Biden’s thinking. If Biden were concerned about the possibility of Trump’s involving the military in his attempted coup d’état, the choice of Austin would make eminent good sense.
***
By his appointments, Biden is revealing himself to be a transitional President. He wants, and perhaps needs, a trusted coterie of advisers to help him steer his way through the next four years.

By proceeding with these appointments, despite strong criticims and even the potential negative impacts on the Georgia Senate run-off elections, he is showing himself to be what he promised: steady, consistent, and loyal to his principal supporters.

In a transitional administration, that may be enough.