On the surface, it sounds like you want to be “right” regarding a mostly subjective topic.
But if I read you correctly though it annoys you that he is dismissing the fact that mods can actually add to the experience in several, sometimes quite substantial, ways.
If so, It is not even about the game, huh? It is more about his disability to acknowledge another opinion. I assume it would not urk you as much if he just states that it’s not for him - without strange reasoning like not done by Bethesda, therefore bad.
However I don’t know your dynamics, maybe he is sick of discussing the case 😜 and if not, maybe you can learn a life lesson here - knowing which fights to take and realising at what point you’re dealing with a lost cause 😊
But do we really need door knobs though 😋