http://whirtorrgetftvz4g466sjqkegtyi35bjl4bvotfkfossunf5my4x6ad.onion/blog/bitcoin-privacy
This simply means that it reveals some information about the owners of the wallets and addresses, while it keeps other information hidden. That however does not mean that the people who want to keep their privacy and anonymity are not off the hook. On the contrary, since Bitcoin is not anonymous , the users of Bitcoin that want to keep their privacy, need to take active steps in order to do so.