I didn't see a pole at the bottom but a perfectly visible trail (as indicated in the changeset).

It kind-of tapered after a while and became hard/impossible to see further into the forest.

I noticed "protected areas for wildlife" signs on the west side of the valley, but none around the forest the path is in. But you probably have much better information about that. Maybe delete the "trail_visibility: horrible" part and put an exit:no at the last node? (So OSM users can see that a path _starts_ at the bottom but will not cleanly reach the top....)