Money is a fiction that we all believe in. A dollar has no particular intrinsic value. A similar case could be made for gold, which is mostly useful because it's so inert. For that reason, an NFT could be cash just as much as a lump of metal or a piece of paper, but only if it is, as you say, "exclusive right" to that NFT.
These don't sound like anything exclusive. They sound as exclusive as any other electronic file.

