What's up with "Plex Servers"?

https://sh.itjust.works/post/54482006

I’m a Plex server guy for friends and family, I have about a dozen users and maybe 3-4 at a time at the peaks. I charge nothing, it’s just a hobby. We’re out there.

I’d switch to Jellyfin but my users need transcoding and Plexamp is my favorite audio player since Winamp.

I’ve been wondering about this, how does hiding the activity from your ISP, as well as the ISP of the person streaming from your server, work?

I have friends I’d like to share my library with but am always nervous about the risk.

Why would that matter? It just looks like HTTPS traffic if you set it up right. And even if they fingerprint it as Plex, they can’t see what exactly is playing. Yes, my Plex library only has public domain content of course.