Not at all .. it's not surviving by any standards.

On the contrary, #XMPP is not just a standard #IETF protocol, it is a thriving ecosystem composed by a multitude of clients, servers, libraries and tools being actively developed in just about any programming language, with some of the most prominent developments spread over Germany, France, UK and the USA among others, solid and well established communities in the Nederlands, Italy, Spain, Argentina, Brazil, Uruguay, Russia ( and particularly in Germany, France, UK and the USA .. but that kinda goes without saying ..) just to name a few, and servers running from almost all across the world.

If you'd like to know more about it, don't hesitate to ask!