I invite you to go hike that trail and see that "nothing" yourself, considering you rate the difficulty with the LIDAR steepness alone, not counting cracks, gullies and the terrain I've crossed, while you're judging from a bunch of satellite data.

Even if they do are appointed to map on the behalves of CAI, this very one route isn't belonging to the list of CAI routes, so for this very route that wouldn't matter much. It would still a CAI account, mapping any public and non-CAI pathway.

This route is not in the list of the official CAI paths - the land registry, or "catasto dei sentieri CAI".

https://15.app.webmapp.it/#/map

è un canale, non un fiume.