[imbriaco]

I'm really confused where people are coming up with the idea that the word "intelligent" is somehow a synonym for "queueing". That doesn't make any sense to me.

The intelligent part of it is that it knows which servers and ports your application is running on as dynos come and go, and the routers is updated in near real time to reflect these changes. Since dynos move about frequently, and there are a great many of them starting and stopping per second, this requires much more intelligence than you probably think.