CoinJoin is absolutely disastrous for fungibility. Either everyone uses it, or it’s crap because it creates good and bad coins. My conclusion after all these years is that there’s no interest in privacy in Bitcoin’s development.

you need to look into zero knowledge proofs. you can prove no supply was created without knowing the amounts involved. https://i.nostr.build/MhtJSSmwRa9cbz1f.jpg

If it isn't fungible I wouldn't regard it as money 💁‍♂️