About how much money corporations spend to cause fragmentation and put people into positions to make shit decisions (Gnome). Yup, I'm sure some of that is simply paranoia. That said, watching some of the shit that gets made on projects like Gnome.. I have no other way to explain what they do.
Paranoia out of the way, I have converted countless people to Linux. They know they are running Linux and don't care. They have KDE so a very nice Desktop, Web Browser, a stack of basic games, GIMP for photo editing, and of course Email. My Kid uses that with Libre Office for College, his professors don't know he does not write things in MS Word.
FUD stops conversions much more than fragmentation. Like GPs claim that there is no Desktop. That claim is complete bullshit, but look at how he's rated up for spinning shit like that.