A decentralized exchange linked to Fiat & Gold and other commodities are a pipe dream. The government will never allow you to do this without
KYC/AML regulations and tons of validation and verification. You will never be able to do this anonymously, without banks and governments
getting involved. We are slaves to the Fiat system and Bitcoin is not going to free us.
While it doesn't bother governments they will allow it, like a small service involving a small number of people. Like Bitcoin now, many governments allow people to use it without regulamentations because there aren't many people using Bitcoins, it's not a problem for them, but when a considerable percentage of population adopts it, the "slavery" will start happening.
![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif)
It doesn't matter how small the service is.
Once you involve international fiat transfers via banks you will get flagged in a matter of days.
You can't escape regulation using banks.
As the user you quoted said. It's a pipe dream and it will never happen.
And I see no reason for it anyway.
Just stick to using bitcoins.