Wow, the Emacs website is really pretty. But I like vim's one too - I feel they symbolize the internal ideals: vim being lean and small with just the essentials (at just 230 kB) while Emacs is more fully loaded (930 kB).
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.
I get that you meant it in comparison to 230k, but in the modern world I find it hilarious that a 930k website is being called (essentially) heavy. If only...