> can / should the land managers be able to manage their OSM attributes in ways that they feel best serve their mission and guest experience?
No. OSM records facts, not individual viewpoints.
Everything entered into OSM should be verifiable - https://wiki.openstreetmap.org/wiki/Verifiability . In other words, for a given feature, any two people should independently arrive at the same mapping.
If you want to build a map that reflects subjective criteria such as "mission and guest experience", there are several platforms that allow you to superimpose your own data on top of an OSM base. Umap is perhaps the best known: http://umap.openstreetmap.fr/en/