I may be slightly confused on how the lore has evolved. I wrote that bit of background based on the following line in the OOC guide:
Weres consider themselves to be the original creations and believe humanity to be the effect of fallen weres who abandoned Nature and so were abandoned in return. Because of this weres take every chance to ignore humanity in every way but for the occasional snack
My assumption is a hungry were, possibly abandoned by his pack, wouldn't have a second thought about taking and eating a child who was playing by himself, defenseless.