Please create a new feature that hides the public link at the bottom of a split thread if the topic has been split to a forum visible only to staff and moderators.
In my community, we split off comments that derail the topic discussion into a staff-only forum for tracking, rather than deleting posts. However, in Discourse, it not only shows the public the name of the new split thread in the staff-only forum but also provides a link to the thread. To me, this information at the bottom of a linked thread makes highly visible topic moderation that need not be. If this information were visible only to staff, I would be okay with it; however, it is currently public.
Non-staff do not see the “View 1 hidden posts” except when using thread filtering settings (in which case it’s only counting non-deleted posts). It’s suggested you have a non-staff alternate account to test this kind of thing yourself.