There's still a lot of little things that are still a pain for someone who doesn't know how things work. Many are not the OS' fault but still, different experiences.

For example, say you're running discord. Next week there's a discord update, it'll not apply the update automatically, it'll only download a deb file. An user familiar with windows may try to open the deb file... And it'll launch the package manager, but the only option available is to uninstall. In order to install the update you'll need the terminal.

There are a lot of little things like this. This one is just something you need to learn, but others are a real pita when you have no experience.

And if you have a 4k screen and Nvidia gpu when you try Linux for the first time, I guarantee you're going to hate the experience.