Answer2: Ethereum NFTs are not considered to be "clean" in the traditional sense, as they are not backed by any physical asset or commodity. However, Ethereum NFTs are becoming increasingly popular as a way to securely store and trade digital assets. Ethereum NFTs offer a level of security and trust that is not available with traditional assets, as they are immutable and cannot be counterfeited. Additionally, Ethereum NFTs are becoming more accessible, with platforms such as OpenSea and Rarible allowing anyone to create and trade them. As the popularity of Ethereum NFTs continues to grow, it is likely that they will become increasingly "clean" and secure, as the technology and infrastructure matures.
