text: Generally OSM maps what's on the ground, not just whats "official" so long as the path exists it will usually be mapped. You could use the tag https://wiki.openstreetmap.org/wiki/Key:informal to indicate it was informally created.
  
  The path has "demanding mountain hiking" set per https://wiki.openstreetmap.org/wiki/Key:sac%20scale?uselang=en which describes it as:
  
  "Exposed areas are ordinarily secured with ropes or chains. Use of hands may be needed for balance. Trail usually has markings.	Portions of the route exposed with danger of falling. Trail may have unmarked portions and cross fields of loose scree or talus."
  
  So really we already tag it as potentially dangerous and not an easy path.