That's only if you want to watch it outside your home network, and either way I would recommend not just opening a port to the world like that. I'd say to use Tailscale (which is trivially easy to install) for remote viewing.

In short jelly fin doesn’t seem as easy as you are all making it out to be.

It does definitely require a bit more work, especially because Plex does things like authentication and network access for you, but that's exactly why all of this drama got kicked up in the first place. Plex doesn't want to get into legal troubles, however unlikely that may be, for providing access to whatever content people are hosting. It isn't true self-hosting.

True self-hosting requires work and a small amount of technical knowledge, but IMHO it's worth it for the freedom, privacy, and control.

You have to port forward for Plex as well.