I never said he *has* to, and I can understand concerns about dying more, but he might actually enjoy those new weapons, too, if he gives them a chance.This seems like an odd thing to complain about. He likes the sword, why does he have to play with something else? I did pretty much the same thing in my playthrough, testing out every new weapon as I got it but ultimately sticking with the Holy Blade. (Though the PIzza Cutter founds it's way into my heart and became my no. 2)
I understand he's using Ludwig's sword because he finds it fun, but he genuinely didn't seem interested in the new weapons at all*, which surprised me (and Woolie, too, by the sounds of things) because I'm the type of person to ooh and aah over new weapons until I'm experienced enough with them to make an informed comparison.
EDIT: Barring being fascinated by using a Great One's arm to clobber things.