I feel like what he’s trying to say it shouldn’t be the end of the world if a kid sees a sex scene in a movie, like it should be ok for them to know it exists. But the way he phrases it is questionable at best.

When I was a kid I was forced to leave the room when any intimate scenes were in a movie and I honestly do feel like it fucked with my perception of sex a bit. Like it’s this taboo thing that should be hidden away and never discussed.

Because he’s right. You can’t access your own server remotely without plex’s infrastructure (provided you don’t just set up that infrastructure yourself). You don’t need to open ports or anything. Your server reaches out to plex server, which creates an entry point to your network. Your stream is then either routed through their servers or possibly setup as P2P stream.