ZFS on Linux has effectively taken over as the standard version of ZFS. It got renamed to OpenZFS a few years ago after the FreeBSD project chose to start using it for their ZFS support rather than upstream illumos ZFS due to how much more active the ZoL project was than upstream.
By running Docker, you are introducing tons of more code that runs with root privileges. There are numerous privilege escalation vulnerabilities discovered over the years. Combined with the fact that root inside a Docker container is root on the host, you are increasing your attack surface instead of reducing it. It's the wrong tool to be using for security.
Oh the number was memory space? That changes the maths a little bit. But I do have 50gb available for a model no problem whatsoever. 384gb is the new 32gb.
The methodology helps focus the attention of human labelers on the controversial/borderline cases, making them more effective in how they spend thier time.
Anything which needs detailed operations planning of the production. Larger factories and say chemical companies use standard flows of the ERP (SAP) for this.