I don't like this direction of defaulting a big part of the information and interaction outside of the blokchain. We already, compare to other blockchains, have a low number of full nodes or decentralized way to access the blockchain. Most users access the blockchain only through steemit.com. I am not even speking about the API that stop everything when it is down.
It just feels like one day, we will just forget the blockchain and use only a database because it is faster.
RE: Update: Communities/Hivemind