Decentralization can occur across many axes -- our public DNS infrastructure, for example, does not have decentralized registration or governance, which is what matters for things like privacy or censorship resistance.
I work at Namebase. This 100%. Importantly, the root of trust for SSL is not decentralized. Any one of the 600 CAs your computer trusts can compromise your HTTPS requests. The most interesting thing about Handshake from a security angle is it shifts the root of trust from the CA hierarchy to a decentralized blockchain system, which can significantly improve the security of SSL.