Once everything is set up, linux is easy. But… that installation process can still go very wrong. eg. The last install I did was Ubuntu 22.04. The version of systemd that shipped with it had a bug that caused the system not to boot. Replacing systemd with a working version fixed that issue. Then it turns out that 5 of the graphics card driver’s dependances were held back (something recent that Ubuntu does, I forget why) so the driver didnt work. Force installing the dependancies (drop to root before KDE started) fixed that.
So yeah if you set things up for someone of course its going to be easy to use. It SHOULD be easy to use after 30 years of development. But that initial setup process is often not user friendly.