Romney may well end up in Biden's administration. But I think he wants the brass ring. He intends to go after POTUS in 2024. Romney is definitely in love with himself.
He knows that if Trump wants it in 2024, he does not stand a chance, so he is positioning himself for 2024 by getting in as many news cycles as possible. What he is doing however is alienating all us deplorables from him. Even if Trump decided not to run, after his mouthing off about Trump, there is no way us deplorables would unify behind his worthless *ss! No way!
His taking the place of McCain as King Rat is about as good as it is going to get for Mittens!