can't have it both ways, they either don't [ever] store, or you're too thick
NFTs can in-fact store complete binary data and complete vector data. There are some examples and some production projects doing both of those things. But more commonly they typically load a URL to an image, and people prefer that instead of a URL that its on an IPFS URI, but people accept an IPFS proxy URL.
In all scenarios, a separate technology/viewer/website is used to access the standard method which returns the data to be interpreted. Which is where things are dissimilar. Analogies don't compare aspects that are dissimilar [0]. Any one similarity satisfies the criteria for an analogy.
neuro-typical people got it