Thank you for clarifying. You are right to hold witnesses to a high standard and to encourage clarity between STEEM and the interfaces that use it. That was written over a year and a half ago, prior to other front-end instances existing. It was less than one month after me joining the platform, and I was still figuring things out (also more than a year before I became a witness).
I understand how busy or chainbb or any interface to come in the future would equally apply, but the practical shared experience of most blockchain accounts today is Steemit.com. Part of effective communication involves connecting in ways people understand. Hopefully the future will involve not only many different centralized interfaces, but maybe even decentralized individual standalone clients we run on our own computers.