Its like many things in Information Technology it is both.
One one hand;
Its about people, and they need simplicity to lead them, Later it can be complex, they are adult’s and we do not want to hold people back. This part is Not technical.
On the other hand;
Often the only way to make simple things, especially when based on technology, we need very good technical solutions to do the hard work for us, appear invisible yet deliver the results.
My key example of this I am developing is part of The essential editions of TiddlyWiki and a sharable Make TiddlyWiki your own - discussion - #21 by TW_Tones facility.
I have started here with this alpha Personal NoteBook edition once downloaded it can see it is no longer at the published address and can a “run once” guide to do various setup things I will discuss in Make TiddlyWiki your own - discussion - #21 by TW_Tones.