Understanding Linux kernel is medium hard, but not frustrating. Using a DE is NOT frustrating if you understand what’s up with their core ideals. D-Bus, HOOKS, env variables… meh I can give you that. But 95% of users live in the web and/or office apps. And for that literally any flavor of Linux will do. My in laws would never in their lifetimes be able to distinguish Arch + KDE + SDDM + themes from Windows. I can bet my right testicle.