I have to admit that the 5th point (Use many, many objects with many interfaces) leaves me thinking...

On the one hand I understand where the author wants to go : by implementing many many interfaces you eventually sort of "emulate" duck-typing, while at the same time reinforcing type safety (specially when it comes to String).

On the other hand, it sounds like a good way to make something that was verbose to begin with even more verbose... but maybe I'm mistaking. I don't do much Java recently (some GWT/GXT sometimes), but I will probably give it a practical try...