That's one of the things I brought up yesterday with Ron as well. I'm no idea who all these random people are and what they are suppose to be doing. My dev email is being flooded with all kinds of emails from people I never heard about before a week ago.
What is Zbx's role precisely?
As I understand it at least (and I may not be 100% correct), zbx was a candidate for Tech Lead. He had talked to Ron and Ron was down with him working through the dev hires.
I think now there's some organization taking form, which is why you are seeing more people. But I think there needs to be a clear organizational structure laid out to everyone, otherwise it just ends up looking like (and working like) a Chinese firedrill. The board's hiring strategy is still not clear to me, but to their credit, I sent them over an organizational diagram and we have been working through what the final structure will look like. Hopefully we can get something finalized shortly that will lend some clarity to everyone.
The problem is, essentially, to grow, roles need to be delegated. If I bring on someone to do thing X, then I still take care of thing X and don't tell them anything about the decisions I'm making, that can be a problem.

I'd like to think that Ron had this conversation with you before he had the conversation with zbx (things have been moving quickly lately I guess).