They didn’t mention it in the post I reacted to.
But both of your suggestions are excellent solutions to the problem.

You can install a plugin to add SSO.

https://github.com/9p4/jellyfin-plugin-sso

Please follow the provided link for more context or information.

The usual way.

Embrace, extend, extinguish

One cannot influence what no longer exists. *tapsforehead

I didn’t see it mentioned yet, so I’ll throw warpinator in the ring.

Clients are available for Linux, Windows, Android: https://warpinator.com/