Before I submit this as a support request, I noticed today Arc doesn’t have the Discover section on the home page that Roon does on the same device (iPad, Android tablet, iPhone & Android phone).
I don’t believe that the Discover panel was ever in Roon ARC.
The Discover panel itself is I suspect something that Roon Labs have left in Roon, but they are not doing anything further with it. Originally, the Discover page was on the Home page itself, but a few years ago it got shunted off the Home page and the Discover panel was put in its place to link to the full Discover page.
You could put your use case in as a post in Feature Suggestions , but I think Roon Labs will few it as a low priority (unless it gets hundreds of votes… )