The DAO (the original DAO, you must have heard of) also claimed that their code is fine. But they were hacked.
The concept of decentralized autonomous organization is one of the most exciting things in blockchain. Since TheDAO hack it's been a long time and a lot of expertise, so you should not be worried just because of some events in the past. By the way there are a lot of successful examples of implementation of DAO.
Also Daox DAOs has a completely different architecture than TheDAO.