Viewing the images directly sounds to me like a different context. Browsing the images is more akin to end user activity, i.e. using the server for its intended purpose. Managing the server is more like making sure it’s running, that there is enough space allocated, security holes are plugged, software is up-to-date, etc. Administrative tasks. When wearing the admin hat, there wouldn’t usually be much of a need to actually look at the photos - you’d be more concerned with file names and metadata, not contents. In that context, the GUI becomes less important. And if you ever do need to see them, you can always fire up the GUI software for that occasional situation.

I saw someone posit that he might have a humiliation fetish. It’s the only explanation I’ve seen that seems rational.