it also appears on governmental maps and is clearly visible on recent aerial images or the strava heatmap from last year. If it's destroyed or access is restricted, tag it accordingly, otherwise it will most likely just get added again by someone else sooner or later without that information.

https://maps.bev.gv.at/#/center/10.4749,47.4623/zoom/16

https://stp.wien.gv.at/basemap/#{"center":[1165750.5787366698,6018015.910864846],"zoom":17.779051042157594,"rotation":0,"layers":"1000000000"}

https://wiki.openstreetmap.org/wiki/Why_we_won%27t_delete_roads_on_private_property#Why_deleting_paths_is_not_the_solution

https://wiki.openstreetmap.org/wiki/Lifecycle_prefix