We have recently experienced a security incident that may potentially involve your Plex account information. We believe the actual impact of this incident is limited; however, action is required from you to ensure your account remains secure. What happened An unauthorized third party accessed a limited subset of customer data from one of our databases. While we quickly contained the incident, information that was accessed included emails, usernames, securely hashed passwords and authentication ...
Its not hard to setup a proxy and use a full SSL cert. A little bit more complex but much simpler for the rest of the family.
You suggested Wireguard, not me. I’m pointing out how it isn’t a great solution to the problem that was presented; you can safely access it remotely with a VPN, but then that isn’t very useful for sharing with others, and you can expose the service to the internet at large, but then you’re opening yourself to risk.