I think he may have meant to convey the following message:

"Hi, we have approached a final phase during this 4 years of waiting.  Thanks for cross postings.

I didn't have doubts; I knew.

Bitcoin began/created a new universe where time is counted in blocks instead of time the way we have known it.  And we are only at "Level 1" of a new financial system/OSI Schematic:

I think he's referring to the first "PHYSICAL LAYER" having been laid.



Are you concerned about "block size?"  Then you should know that Ethernet has a maximum transfer packet rate of only 1500 bytes (1.5kbps).  But TCP/IP doesn't care about this.  Long live lightening!"

I think he intends to convey; When looking at bitcoin [As a Network Protocol] and it's adoption in a Financial Protocol, we are only in the first Physical layer of it's adoption.  The financial system is beginning to see how relevant blockchain technology is and we've only just begun this first phase of the OSI Schematic after 4 years of waiting.

Now we are entering the data link layer of this OSI Schematic; where institutions test and implement their physical blockchain layer as we advance forward to the data link layer [Linking together all of these networks (blockchains) into a seamless Network layer - 3rd level].

I could be totally off in what he intended to convey.  I simply thought I would give it a shot.