I think it’s just general fear of the command line. I’ve had a friend who always owned a mac, and started using it for his programming course. While assisting him in trying to compile some programs or use something like git from the mac’s zsh terminal, I can tell it’s a stressful event for him, even though all I told him to enter were simple commands like ls, mkdir, g++ etc.
I have a machine that runs fedora with no trouble at all. I never needed to debug anything, multimonitors and sound outputs all work. But every once in a while, something happens which can only be solved through the command line, because linux simply does not have a settings utility as extensive as windows control panel. It’s fine for me, but telling that friend to bring up the terminal and enter a cryptic line will probably freak him out.
Typical plan to fish for a big investment from Microsoft? A shiny new M$ campus, thousands of jobs and everyone pretends this linux thing never happened.