I'll make the same comment I did on the other post about this. Either document how it differs from FreeBSD jails or give it some other name. Anything else is asking for confusion.
That some other name: 'cells' (or 'tiles'), in the compositional sense of leaf and tree, forest, framework is more inviting for creative work than 'jails'.
It would have been more interesting have they released something compatible with Open Container Initiative. Most people use Docker containers and having Docker compatible containers would have helped with improved adoption of BSDs.