Blockchain folder, is what he meant I'm sure. 

Yes, the data storage path will direct where the blockchain gets stored, but you'll still need the folder for a variety of configuration files, logs, saved wallets ect.  I'm not aware of a cryptonote coin that functions differently right now, but that's some welcome feedback. 

I can see how a user could welcome the ability to choose an installation directory for all program data to be stored, especially if they prefer to install things outside of the C drive.