that video is very superficial and imho woke fearmongering the following is from ethereum.org The environmental impact of NFTs NFTs are growing in popularity which means they're also coming under increased scrutiny – especially over their carbon footprint. To clarify a few things: NFTs aren't directly increasing the carbon footprint of Ethereum. The way Ethereum keeps your funds and assets secure is currently energy-intensive but it's about to improve. Once improved, Ethereum's carbon footprint will be 99.98% better, making it more energy efficient than many existing industries. To explain further we're going to have to get a little more technical so bear with us... Don't blame it on the NFTs The whole NFT ecosystem works because Ethereum is decentralized and secure. Decentralized meaning you and everyone else can verify you own something. All without trusting or granting custody to a third party who can impose their own rules at will. It also means your NFT is portable across many different products and markets. Secure meaning no one can copy/paste your NFT or steal it. These qualities of Ethereum makes digitally owning unique items and getting a fair price for your content possible. But it comes at a cost. Blockchains like Bitcoin and Ethereum are energy intensive right now because it takes a lot of energy to preserve these qualities. If it was easy to rewrite Ethereum's history to steal NFTs or cryptocurrency, the system collapses.