Action Graph : news/action-graph

I really wish you could use more then just C#

Am I just dense, or is this entire page total nonsense?  I have absolutely no idea what any of it means.  They removed the amazing I|O system from Hammer without giving us any examples of how to use this graph editor to do common things like make a door open, or func_movelinear.  

This seems vastly more complicated, confusing, and time consuming compared to what thousands of mappers have been using for decades.  :(