pbnoxious
I'm not a local and currently can't seem to find any official information.
When I left this note last year I was visiting the Pfaffenstein and both "Nasse Schlucht" and "Taubenschlag" were definitely not designated as official paths. So they might be still "walkable" and not blocked but not maintained and officially forbidden.
Keep in mind that this ban of "general access" (i.e. for using the path to simply go to the top of the Pfaffenstein) is not the same as access to the rock for climbing specific routes, which I think is still allowed.

For a definitive answer someone with better local knowledge has to tune in.