Kenji has repeatedly said their sausages are custom made to his specifications by Dittmer’s:
https://www.foodandwine.com/travel/restaurants/j-kenji-lopez-alts-new-restaurant-will-open-soon
so I don’t know where your claims of “store bought” are coming from…it seems to me that you’ve already made up your own mind about Wursthall and are now just trying to be snarky
