For me it’s the opposite. I really, really dislike finding the right button in a GUI that does what I want compared to writing the right thing into a configuration file. When I went on holidays with my family we took one computer that the whole family could use for accessing the internet and to make it user-friendly, I chose to install KDE on my Reform. This was with the imx8mq back then. It worked really well and the GUI elements felt really snappy and responsive. I do not know of a “repository of secrets” (other than the amazing Arch Linux Wiki page of course) so I just wanted to tell you that: KDE Plasma works fine. 
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