My wife changed her Windows work laptop last week. Her Desktop is synced to OneDrive so really she just needs to login. Despite that she was panicking that her PDF's were gone. They weren't, it's just that the new laptop has a newer version of Adobe Reader which uses an updated icon.
Some people are just tech illiterate and the slightest difference can be upsetting. My mum's the same with her phone. Using Google Maps to navigate is an achievement for her and I've been telling her to use it for years. The first time she did she reached her destination literally shaking. She was also amazed with herself that she had done it.
There's some weird fucking people in this world