This article makes me feel misled. Doesn't niche as applied here apply to everything from the wheel to soap? Fake examples: The general needed a wheel to move

This article makes me feel misled. Doesn't niche as applied here apply to everything from the wheel to soap? Fake examples: The general needed a wheel to move his cargo, so when he had the wheel invented, now the wheel was from an army niche. The king didn't want poop on his hands like a pleb, so he got someone to invent soap for him. Boom, the soap came from the niche of kings. Someone who needed to walk far, invented shoes. Boom, the niche for shoes was far walkers.