I used it for a while. I worry that with very few resources to maintain it parts might be getting more antiquated than they should - I read somewhere about the network stack for example. I'd welcome your view on that.
KDE 4 isn't too bad and is the best fit on my little MSI. 5 OTOH has real problems of borking its desktop-appletsrc and scrambling the desktop layout so I have a script to back it up periodically & just restore it. It also has wierdnesses round autohide which would be intolerable on the small screen. 5.16 as exemplified in Neon looks a lot saner and the sooner it finds its way into De[bv][iu]an the better.
Combined with some judicious mixing and matching of bits of different themes and a decoration Theme called Reactionary makes the whole thing look and behave largely as things did about 20 years ago with a few genuine improvements picked up on the way. But fielding off those crayon-wavers requires some effort from time to time.