Sir no sir. I believe entirely the opposite. If they're tech illiterate then they don't have the entrenched knowledge that is the only thing keeping most people within the Windows ecosystem.
A Linux install that meets the basic needs of the user is perfecto!
Less so recently just due to time constraints, but I'm generally the technical person in my family group, and I've lost enough touch with Windows that troubleshooting it is increasingly difficult. If they need me to 'format and reinstall' they're getting Linux unless they have a very specific need that only Windows can cater to.
It's getting less silly every month! So many people in that boat only use the web browser anyway.
With a well-supported hardware configuration and a working web browser, even a non-techie may have a more stable experience than they would with Windows.
That has as much to do with the decline of Windows as with the ascent of desktop Linux, but still.