Seeing that quote, it reminded me of the Luigi Car from the Pixar Cars movie. At least for Luigi's perspective, he explains his point for why compared to the Warcraft video clip.

https://www.youtube.com/watch?v=2fEWAc85ed8

As for Supersnow's explanation for what the algorithm looks like for AIN, it makes a lot of sense. It accounts for why Healers don't get it when they clearly should have it. Did Warcraft eventually allow for multiple AIN's for their dungeons queues too in later expansions? It could be something to add in with all 3 potentially getting it with a dead queue at the moment.