Could someone even attempt to describe to me how obstacle avoidance is any different from the follow-me router in single-ended mode, as demonstrated in this video from 2011?
Did they really just change the name, perhaps tweak 5% of the behavior, and call it a new feature? It's not even push-and-shove!!!
What the actual eff.
It's actually very different, you would have to try it for yourself to see the difference. But here's the explanation.
Obstacle avoidance sets the ground floor to build push and shove so this is a milestone on the way to push and shove. The follow-me router is basically the autorouter being run on a single airwire either from one end or from both ends of the airwire. Depending on your mouse position the Autorouter will come up with a route which may include any number of transitions or bends, you can't predict what the follow-me router will produce in relation to your mouse position.
The Obstacle avoidance mode works differently, as long as you don't encounter an obstacle you are just manually routing like normal with full control. Once you encounter an obstacle, EAGLE will immediately walk around it, following your mouse cursor. This affords more predictability and hence greater control while routing. With the Follow-Me Router you are merely giving EAGLE two points and letting EAGLE figure out how it wants to get there, with this mode your dictating to EAGLE how it gets from point A to point B and it's smart enough to walk around barriers.
I understand the confusion from the videos since you can't see the mouse clicks, but try it out and you'll see it's nothing like the Follow me router.
I hope this is helpful.
Let me know if there's anything else I can do for you.