Earlier quoted context omitted.
(tangent) This is true, although entertainingly, the "server" part has always been easily confused. In X11, the "server" runs on your local machine, and the "client" frequently runs on a remote system.
The server runs on the machine that allows clients to connect to it. What is the confusing part about this?
Add to that that the user manages the ssh connection while the X connection is managed for them...