Adam Back, the prominent figure in the cryptocurrency space and co-founder of Blockstream, has joined the ongoing battle for the fundamental essence and integrity of Bitcoin, particularly concerning the controversial issue of 'JPEG spam'—the practice of embedding large image files such as digital artwork or non-fungible tokens (NFTs) into transactions, which many argue clutters the network and undermines its primary purpose as a digital currency.
source: https://www.coindesk.com/tech/2025/09/06/adam-back-joins-fight-for-the-soul-of-bitcoin-over-jpeg-spam