@imecth@cullmann@ohyran@UnityDevice@domi It wasn't true when Allan wrote that blog post, and it's still not true now. If you drop XEmbed and only support SNI (as Plasma did years ago), you have one way to handle it. As it is, Fedora Workstation has an open ticket about adding the appindicator extension because applications are broken without it and Ubuntu maintains and ships it to support a useful user experience.
Currently the ticket is deferred until we resolve updating the SNI spec.