Yes but you can actually have Copyparty run as a server similar to Jellyfin and have the same thing too?

Am I missing something that I am not looking at? But won't jellyfin have the same issue, I think that plex has servers that you can connect from outside but the GP wanted to move to jellyfin and I was talking about that.

And, you can even have plex like thing by just having Cloudflare Tunnels/Tailscale + Copyparty too.