I changed my mind, It appears my judgment was a little clouded before, as I recalled that the duke hasn't had an arc dedicated to his character yet, unlike those two. So, it'd be best for me to give him a chance and see whether he has what it takes to be endgame.
Tldr : I was too harsh on him without giving him a chance, and holy visual he looked too fine in the last chapter my slutass was sold instantly

As a devoted Johannes truther who was on the verge of being converted to Alex team, I would be so mad if the Duke is the endgame