

In this situation it’s not necessarily that it’s the “right” or “wrong” device. The better question is, “does it meet your needs?” There are pros and cons to running each service in its own VM. One of the cons is the overhead consumed by the VM OS. Sometimes that’s a necessary sacrifice.
Some of the advantages of running a system like Proxmox are that it’s easily scalable and you’re not locked into specific hardware. If your current Beelink doesn’t prove to be enough, you can just add another one to the cluster or add a different host and Proxmox doesn’t care what it is.
TLDR: it’s adequate until it’s not. When it’s not, it’s an easy fix.
“It’s just a temporary fix.”
…Five Years Later…
The painted pole is still there but the clock is gone.