This display is definitely programmable to show any output you'd want. A similar display is the Turing Smart Screen (linked in the article) which is a small image-over-usb display.

((I really wanted the latter display to work on my Mac, but there's unfortunately some OS-level USB buffering (I think) that ends up creating a corrupted image - https://github.com/mathoudebine/turing-smart-screen-python/i... ))

>>> I don’t really see the need for this

Yes that's the essence of most hobby computing.

You can? As linked in the article, it's open source and supports custom themes/UIs

https://github.com/WeActStudio/WeActStudio.SystemMonitor