I don't think any privacy enhancements have been baked into Steemit or BitShares. EOS accounts will be much like Bitcoin - pseudonymous numbered accounts. The best way if you want to keep any blockchain account pseudonymous is to pass your money through ZCash or Monero and then through an exchange into the destination blockchain unit. That is assuming you can find a cryptocurrency exchange that doesn't require identification. It's only a matter of time before we see blockchain exchanges, that run as autonomous agents. Then the govt will have much harder time figuring out who owns which account.