Some people in the comments of this claims to use it with real data https://www.phoronix.com/news/Linux-6.2-Btrfs-EXT4

If you use it don’t forget to use RAID1 for metadata

While I wouldn’t say it would make things like drawings of monkeys with different backgrounds valuable at the very least it would have made them truly decentralized instead of these [random-blockchain-company]-dependent and ICANN-dependent scams