Between the Material You design and move to break apart the Chrome browser from ChromeOS, now more than ever, ChromeOS is Linux with Google's desktop environment.
windows sandbox is… getting there, macos is decent but iirc the app dev can choose to not use it. all Linux options require user intervention to ensure it’s set up properly. ChromeOS’ sandboxing technique is inherited from Android and is the strongest/strictest of any desktop operating system.
Security, not privacy
ChromeOS has sandboxing, which already puts it miles ahead of Windows and Linux (no, the Flatpak Sandbox doesn’t count)
It’s not the only desktop OS that has sandboxing.
windows sandbox is… getting there, macos is decent but iirc the app dev can choose to not use it. all Linux options require user intervention to ensure it’s set up properly. ChromeOS’ sandboxing technique is inherited from Android and is the strongest/strictest of any desktop operating system.