I'm not trying to argue? I legitimately don't know what advantages LXD has since I don't see it used widely in the industry, whereas LXC is everywhere.
LXD also has some cool features like launching VMs in a way that's nearly indistinguishable from containers, which can be useful if you need to do something like run a distro that uses cgroups v1 (e.g. CentOS 7) on a more modern distro.