Well, why should I not say when it sounds contrived to me?

Exporting X11 windows from multiple VMs on localhost? X11 forwarding Firefox to access remote speakers? Seriously?

Yes, there are niche scenarios where nerds still use X11 for useful hacks like that (myself included), but the discussion is about the future display architecture for the proverbial linux desktop.

X11 has been a ball on a chain here for a really long time now. Use-cases such as "too lazy to open a matlab pool" or "splice firefox audio" are not exactly a convincing counterweight.

I'll gladly trade in my ability to run a remote gnuplot every once in a blue moon for a desktop experience remotely comparable to OSX or Windows.