Perhaps the Linux SUX experience
Simple User Experience (S·UX)
From my long experience of dealing with "simple" users the reality is that the vast majority want a static, consistent inferface—pretty much desktop icons for their email thingy, wordprocessor and spreadsheet etc thingies, browser thingy — in most cases you would be (un)lucky to get beyond six applications.
A popup menu for any other applications. Folder icons on desktop seem to be essential too.
Her indoors is definitely in this class. Currently Win 10 esu + Open Shell + Firefox + Betterbird + LibreOffice. Once Win10 finally goes Norwegian Blue, she won't notice the "upgrade" to Linux or FreeBSD environment — although an AI stripped version of Firefox would be on the cards.
Ultimately if most PCs were shipped with a zero cost standard basic Linux SUX environment with the option of a network install of Windows ($0-$Lots) I imagine the polloi in their multitude would stick with SUX. Sometimes the unchanging and boring is desirable — when was the last time you actually had to search for the controls of an electric pop-up toaster ? (Without the ultimate folly of invoking and asking Talkie.)