Yes. And with something like a GL.iNet travel router + Tailscale, you can watch Jellyfin from anywhere without ever exposing it to the Internet. You plug it in your hotel room, tell the hotel TV to connect to it, and voilà: Jellyfin on any random TV.
Connect a random TV to your home LAN over a VPN? No thank you! I would rather use HDMI in. You can also cache data locally. Or just watch on a smaller screen or tablet. There are a lot of jurisdictions where I would not want to take private keys or passwords with me.