They did a major upgrade in 2023. Not sure what you would think now. Just put it on a thumb drive and take it for a spin.
Discussion
This? 
I also find it ugly, I use Kubuntu on my main PC because I like the community and support around Ubuntu and love KDE Plasma desktop. I tried the real KDE distro, Neon, but I had too many issues with it, starting with how Full Disk Encryption is managed.
However for a node that run 24:7 and that you connect to only for maintenance and update, you don't care about the GUI. For the node management itself, like open/closing/rebalancing Lightning channel you use an app with a WebGUI (Thunderhub or RTL) or even Zeus on a secured enough mobile.
I'm also on the same boat. Running Umbrel on a Raspberry but sick of it freezing regularly and having delay on some app update. If I have time I will do a node on a miniPC (like an Optiplex Mini that are dirt cheap second hand). However I would love to migrate all my channel on it without closing/reopening but I'm not sure it's (easily) doable.
Let us know once you made it!