

There used to be skins for KDE that made it look and feel 1:1 like Windows XP, I don’t know if these things still exist. If yes, there you have it: Just make the system behave like Windows and they won’t notice a difference. They only have to use Office, Mail and print files anyways. Most other tools they use are browser-based and will feel the same way
Yet they are fine with using Windows 11, which looks completely different to Windows 7 or XP. They complained in the beginning just as much but then they were fine with it. People get used to change, they just hate it in the beginning.