It’s true that enforcement is a practical challenge. However, the developers of the Funkwhale software are probably not as decentralised as the operators of Funkwhale pods. Copyright holders could potentially get future development shut down on the basis that the service implicitly authorises or encourages copyright infringement, as they are trying to do to youtube-dl. The details depend on where the developers live, but this strategy has worked for some tools like Napster, KaZaA, and some BitTorrent trackers, while failing for BitTorrent clients. Which side of the line will Funkwhale fall on?