It would be good if you had any reasons to support your statement. From what I have heard, Digg had to be re-done for a couple of reasons. Some of them were that they started using a new technology to host Digg(because they were having to disable features to keep site running due to high server loads), so it had to be re-rewritten to be compatible. Also, the current version is just bare-bones of the final version as they are still working on getting the core features working properly without crashes before they move forward to bring in all the new features. Plus Kevin Rose says that this new style of Digg was a move that they considered best for how the current market is. They can make mistakes and if this was a mistake then they will shrink if this wasn't they'll continue growing...

You should check this out:
http://www.youtube.com/watch?v=eQNBcIPSROs