I remember ZFS being lambasted for its "layering violations" a lot. Also SMF for its binary formats. Now there's btrfs with the same type of "layering violatio

I remember ZFS being lambasted for its "layering violations" a lot. Also SMF for its binary formats. Now there's btrfs with the same type of "layering violations" and systemd ('s ecosystem) using binary formats. What's good for the goose, ...