The whole notion of CSDs is a blueprint example of what happens when UI designers try to think things through too hard. They come up with grand solutions to trivial problems that are so poorly thought through that they create even bigger problems.

Realistically, nobody is going rewrite their entire application just because of what a tiny cabal of Gnome developers think. Just read this post that was linked elsewhere in this thread. At the end, Tobias is basically arguing that people should go out there and harass the developers of all Linux desktop applications (including the entire KDE project!) to follow through on this ridiculous idea:

Thus, our goal is for as many apps as possible to have the following properites [sic]

• No title bar
• Native-looking close/maximize/minimize icons
• Respects the setting for showing/hiding minimize and maximize
• Respects the setting for buttons to be on the left/right side of the window

Which apps are affected? Basically, all applications not using GTK3 (and a few that do use GTK3). That includes GTK2, Qt, and Electron apps.

If that alone doesn't alert people of how out-of-touch the Gnome developers are, then I don't know what would.