So I am curious if I am reading this correctly.
You are reading it correctly.
"Node" didn't officially exist as an entity of its own in SR5 core. They still used loosely in SR5 when talking about Host (but in some cases also when talking about Device or Persona). But no, the use of "Node" in core was a term from previous editions.
Or as DT puts it:
DT p. 13 Generation Wi-Fi
It’s similar enough that occasionally the old terms get applied to the new structure, but what can you expect? A node was a node for a decade, and now we need to split the term and don’t even use the original.DT p. 106 Beneath the looking glass
It took the hacker community a few days to discover that we couldn’t exert the kind of control over these hosts that we could over older nodes and the hosts that came before the Wireless Matrix Initiative.Having said that, in DT they introduced
foundations and within each
foundation you will have seven
nodes, but this is something else than what they were mentioning in SR5 core.