He seems to understand it better than you, and is more humble with what he claims to know too. For example, you earlier claimed that the
"Bitcoin does not currently propagate blocks in their full size, only the tx hashes so your idea is not in touch with how Bitcoin network currently works."which is clearly wrong; the Bitcoin P2P protocol supports the propagation of complete (non-encoded) blocks between nodes/miners.
Some miners use a
centralized service called the Relay Network to improve their propagation rate and reduce their orphaning risk. However, this is not Bitcoin; the members of the Relay Network can be thought of as an Industrial Trade Group less centralized than a mining pool but more centralized than an independent miner operating on the P2P network.
Furthermore, the validity of your claim that most miners use the Relay Network depends on the definition of "most." The empirical network propagation impedance is closer to what you would expect if
no miners used the Relay Network than if
all miners used the relay network.