The more accurate name (that we use sometimes) would be "Google Developer Products", but that just doesn't slip off the tongue as nicely.
When I started at Google, all of our APIs were true APIs, and my title was "API support engineer." Then we started developing these not-quite-API tools and platforms, and my titled changed to "Developer Programs Engineer". Also doesn't quite slip off the tongue. I do miss those simple days when we only had APIs... Alas!