They are still quite powerful considering they are about 12 years old (Sandy Bridge era).
Hopefully they add 8300s as well.
HP really makes/used make machines pleasant to upgrade and service around that time.
I had a stint with PhotoPrism recently and it was faster to upload gigabytes of photos to my Xeon E5-26xx server and run PhotoPrism there (including transfer time) than wait for it to complete the face recognition on my desktop with the Ivy Bridge CPU.
But for a bare packet pusher ie file server, PiHole and the like I would agree it would be more than just fine.
Edit: Oh, and being HP they are pretty much clip together, no screwdrivers needed.
I'd be curious about how the power draw would compare to my current ryzen 3700x which is vastly overkill for my needs, but obviously much newer.