@The Callorhinchus I'm not sure if you got an invite already but @Adster mentioned in one of the categories, which you see after you got the invitation, that the everything is running fine when installing Hexos as a VM in Promox, so at least there's that.
I guess most people using proxmox just use truenas directly, the Hexos target audience probably doesn't want or need the increased complexity/possibilities?
I'll use proxmox since Hexos currently doesn't support all the applications which I need and I will spin up dockers in a VM in proxmox.