I've said for years that Linux works for grandmothers, and for me (and a bunch of others).

It doesn't work for people who:

- need a locally installed copy of MS Office or other Windows only software

- IT admins that stopped learning a long time ago

- etc

As others point out, for som of us using Windows or Mac is a hassle. They're slow (30% longer compile cycles, don't even get me started on git), missing important customizability,m no built in universal package management etc.