Skeptical that he could write without a single typo, using apostrophes and all but forgot he is married. Not how being drunk works in my experience.

Plex runs relay servers where your Plex server will connect to the relay and your player will also connect to the relay, making both ends of the connection egress type as far as routing and access control goes. https://support.plex.tv/articles/216766168-accessing-a-server-through-relay/

It’s optional and likely not everyone uses it, but this provides a way for Plex to do remote streaming without the Plex server being reachable directly from the internet.

Separately, it costs money for Plex to run.