Display can be fixed with torrenting magnet URLs.

By centralization of display what I mean is along the lines of the sort of censorship that is actually applied here: popular exchange frontends and client software not displaying blacklisted NFTs. This is ultimately a social and market issue rather than a technical problem; it's already possible to buy sell and transfer NFTs facing this sort of censorship because the smart contracts themselves are not censored (or else uncensored copy markets could easily be published), but it doesn't matter because if they are banned on the frontends most people recognize and use the price will tank anyway; few people care about NFTs except as a speculative asset and possibly for clout, take that potential away and there is nothing left.

Ultimately I think what it comes down to is that the property of non-fungibility itself is directly at odds with privacy, decentralization, and censorship resistance. The value of an NFT anonymously traded can't really be evaluated because its history of trades could easily be (and often is) all fake wash trading, so there's always going to be a trend towards less or non-anonymous trading to establish provenance. Maybe if they did something beyond being a simple token representing an image, idk.