While the network of Usenet is pretty fascinating, the NNTP protocol is pretty bad. It's a stateful protocol which makes it challenging to write clients for and the protocol itself is textual and chatty which makes it fat on the wire. ActivityPub is a much better "modern" manifestation of the protocol and its capabilities, though unfortunately the actual AP standard is barely glanced at and most people write code for Mastodon's implementation of AP with a minority focused on Lemmy.