I went exactly the same route. Years of proxmox realizing it is not KISS in any way for my use cases. Switches to Nixos on ZFS root (so no bash installation scripts ;) ).
However, docker has not the same level of isolation and security as VMs. I am currently looking into gVisor for that.
My t440s is 10 years now. Still going strong as my main and only computer. Although, those frame.works's look really nice.
Ansible and Terraform united. Make something out of it IBM.
You just update DNS entry if your ip changes (automatically over api ofc)
Just self host the bridges. I mean if you trust your phone more than your server, this won't help.
Just if somebody else needs this for ZFS: https://blog.juhefa.de/posts/zfs-replace-disk/