I've seen a lot of people have this same complaint about how everyone still doesn't like him enough. It's realistic though considering the amount of indoctrination in the world about magic being better than swords and the fact that one mage took down an entire dwarf sword army. It reinforces that mentality.
The reason the adults let the discrimination about swords run rampant is because it is PLURAL sword(s) there have likely been multiple people like will in the past (when that short dude said something like "I thought you were supposed to leave the swords to me") will is probably an experiement left for development plus he's someone that doesn't need preferential treatment to still achieve his goals we've seen this
Although he saved the town from mage killers it still didn't change the fact that he couldn't kill physically resistant enemies AT THE TIME (he learned prime after that) so they had a valid reason for rejecting his faction ceremony as well. He's an mc that won't have the whole town loving him after doing one good thing like other shows its apart of the development.
