Not all OS's, unfortunately. I'm on the boat that says conforming to Gnome HIG's is a bad idea.

Just today I had the disk usage analyzer (baobab) open and I was navigating inside directories so I want to go up a directory and clicked on the "<-" left arrow in the headerbar, which went "back" a screen, discarding all the work done scanning the filesystem.

If this app had a traditional menubar and a toolbar this wouldn't have happened.

This is a common type of experience I have every time I use a Gnome app. It almost feels like someone deliberately researched how to make desktop apps as counter-intuitive as possible and implemented that as the policy for some reason.