Oh, I didn't care for the ending. It seemed like it was at perpindicular angles to the rest of the story. But the rest was so enjoyable I'd still heartily recommend it to anyone.
I thought the ending of this one added a nice layer and pitched the whole bedtime story into a different light. It provides hope and direction on fomenting revolution quietly and incrementally slow. The robots were shown as obvious and inept in order to reinforce the need for quiet and incremental. The effort must be unnoticed, and the bourgeois must be convinced that the idea was theirs all along, or it will fail.