Ok, first no one is assuming anything. The breakfast box itself stated that the spell was correcting the problems with summoning a not quite perfect erfwarlord. It didn't fix an imbalance, it fixed a broken Parson. And the bracer is not an artifact, it's only a magic item. Sizemore only said that it might qualify as an artifact, not that it was.
Still, ever since parson started getting items in his meal, I always wondered if the 5th arkentool might be hidden in the netherspace that food pops from. But gamewise, the food popping at dawn is just moneymancy. Converting money to anything is moneymancy in erf.
For the same reason that Wanda gets sushi but stanley did not. Because the game pops culturally appropriate food.
In fact, why is Parson's food customized for him to resemble Earth food? Even Code Red Mountain Dew?