What's funny is that Brian Armstrong is probably expecting some deus ex machina of a developer to save bitcoin.
Long term, we need to form a new team to work on the bitcoin protocol. A team that is welcoming of new developers to the community, willing to make reasonable trade offs, and a team that will help the protocol continue to scale. Youll be hearing more about this over the next month or two.
Or he's just planning on competing with blockstream when it comes to influencing bitcoin core's roadmap. If the price is falling because if this, I think that people are taking him too seriously. The problems he talk about have existed within the bitcoin space for a long time, the recent block size drama is made to look serious by unnecessary reactions like this.
The price isn't falling because of what Brian Armstrong said. It's falling because transactions won't go through.