I think what he may be hinting at is that at some point in general adoption, Bitcoin may become so ubiquitous that fiat currencies such as the US dollar will no longer be used much at all, perhaps never.
Right, I didn't glean that. What's 'the event horizon'? It confuses my English syntax. Lol.
I think he was saying that once you hit the event horizon you hit the point where there is no going back. So in a black hole the theory is/was that once you pass the event horizon no information can come out. Of course things have become more complicated since then with various other theories, including Hawking's in the last few weeks about grey holes vs black holes.