It is not the charging cables, but the actual chargers itself. They are eye watering expensive if you buy them from Apple directly.
Amazon and eBay are flooded with fakes that can be life threateningly dangerous. I can see why some people prefer to buy from Apple rather than figuring out what brands are actually not going to burn your house down.
Good point re dangerous fakes, but I wonder how persuasive it is in practice. Ive occasionally seen teardowns of fire-risk power blocks on hn, but (genuine question, because idk) is that a mainstream concern?
I bought a 100W Apple MacBook charger from Amazon. After using it for a few hours, it has a burnt smell. I can't be the only one that experienced this.