I'd crank that up to like 80% Linux users somehow always seem to overestimate how tech savvy most people are.
I'd say 50% of users can't tell you what an operating system is. maybe more. and ya'll expect those people to be able to CHOOSE a Linux distro and actually install it. no way. that's way way too much to ask of the average end user.
it took most users years to reach the minimum understanding that they have of windows patterns. change how one thing that they got down works and they'll panic.