Your gaming scenario still requires EPIC to issue trophies and be the sole arbiter of who gets trophies. People have to trust them to prevent cheating, and not

Your gaming scenario still requires EPIC to issue trophies and be the sole arbiter of who gets trophies. People have to trust them to prevent cheating, and not to hand them out in an unsporting way. EPICs game servers will be minting your trophy-tokens. It doesn't make a difference whether EPIC provide a public API for querying a users profile for what trophies they have, or whether EPIC put that information on a blockchain. NFTs also don't help digital artists in that NFTs don't prevent copyright infringement. A certificate of ownership can be placed in a blockchain, with a hash, but unless you have a copy of the art to hash then you can't verify it. Once you have a copy of the artwork, you can just ignore the blockchain or claim ownership on a less reputable blockchain. So again, reputation of the organisations minting tokens on the blockchain is key.