I can’t see how this position could be in his interest.

OK, let’s say he’s right.

Now let’s assume Trump runs against Kamala Harris in 2024 and beats her fair and square.

According to his theory, barring any new legislation to the contrary, Vice-President Kamala Harris has the authority to reject any slate of electors she has any question about, accepting instead alternate electors beholden to her, thus installing herself as President!

(That’s a pretty sweet authority – essentially the right of any party to hold power forever!)