All those tools use a Linux VM (whether managed by Qemu or VZ) to run the actual containers, though, which comes with significant overhead. Native support for running containers -- with no need for a VM -- would be huge.
there's still a VM involved to run a Linux container on a Mac. I wouldn't expect any big performance gains here.
Still needs a VM. It'll be running more VMs than something like orbstack, which I believe runs just one for the docker implementation. Whether that means better or worse performance we'll find out.
Yes, it seems like it's actually a more refined implementation than what currently exists. Call me pleasantly surprised!