Whether Wonka is an origin story really depends. If the narrative details how Wonka developed his skills, personality, and motivations from the start, then yes. But if it jumps in later in his life, then probably not.
Well, '2d noodle fanfic' might refer to fan - made fictional works within the realm of 2D media, such as animations or comics, that incorporate the idea of noodles in an interesting way. It could be a story about a 2D character who runs a noodle shop and has all kinds of wacky adventures with customers. Or perhaps it's a more surreal story where noodles have some sort of magical power in a 2D world.
No. Willy Wonka is a fictional character from the novel 'Charlie and the Chocolate Factory' which was first published in 1964. Although the story is set in an imaginative world full of magic and wonder, it has no basis in real events from 1896 or any other time in that regard.