Right, it’s a link to the JPEG. Either way, the point still stands, there’s no mechanism in the blockchain to prevent duplicate content or enforce uniqueness of what the NFT points to. The NFT token is unique within its contract, sure, but that doesn’t stop someone from deploying a near-identical contract with the same media and metadata. That’s the issue, the blockchain doesn’t know or care if the same JPEG is being reused in other collections.