>Look at that top bar. What do those mean? How do I un-gray them? What do I click to start capturing packets? I agree, yes. But notice that my screenshot was o

>Look at that top bar. What do those mean? How do I un-gray them? What do I click to start capturing packets? I agree, yes. But notice that my screenshot was on macOS, not desktop Linux. My point was that there are design guidelines for desktop Linux apps. GNOME has them[0] and KDE has them[1]. And then there are applications that don't follow those guidelines - like Wireshark, one of the ones you referenced - regardless of platform. It's not the platform's fault, it's the app developer's decision to either make their UI conform or not. 0: https://developer.gnome.org/hig/stable/ https://developer.gnome.org/hig/stable/ 1: https://community.kde.org/KDE_Visual_Design_Group/HIG https://community.kde.org/KDE_Visual_Design_Group/HIG