Well rather vim wants to be a text text editor while Emacs a computing environment with text editing as the central thing/main interface.
It still has few rough edges, so may not be for everybody.
1. If Emacs hangs/pauses, the window manager hangs/pauses. Can't really do anything in X so have to switch to a virtual console.
2. GIMP stopped bringing up working file dialogs. I think it is some EXWM configuration change I made.
You might also have issues with tooltips/popups depending on your EXWM configuration.