As long as you don't need to access said Plex server from an Android TV device, like Nvidia Shield - AFAIK there's no APK build for tailscale that will install

As long as you don't need to access said Plex server from an Android TV device, like Nvidia Shield - AFAIK there's no APK build for tailscale that will install on Android TV (which is a slightly different device profile from phone/tablet).