What's the reasoning behind not having a "system tray" in GNOME? You need to install an extension for that, and that is a weird process for newcomers/beginners.
But my question is why? Does GNOME really think you don't need one? Why don't they include it?
I think you're supposed to use the new notification panel now, which kinda works like those in android and ios, but it'll take a while until 3rd party apps supporting them.