Hello nixon21,
You can see that this object has flip-flopped between an informal trail and not existing at all over several iterations: https://www.openstreetmap.org/way/1433088186/history .
This approach really does not help anyone.  In particular, deleting something that DOES exist but shouldn't be used for reasons of access rights / hazard / whatever will have exactly the opposite effect to the intended one - someone is likely to re-add it without tags such as "informal" etc.
Instead, what I would suggest is adding it as either a highway=path (or disused:highway=path, as appropriate) and then making sure that other tags are also correct - things like informal, access tags, hazard trail_visibility, etc.
I would also echo the suggestion above to discuss specific cases in the forum.
An example of one I've mapped myself that was closed for erosion control is https://www.openstreetmap.org/way/678188487/history ; another example is https://www.openstreetmap.org/way/1086252957 (note the other tags on there that summarise the on-the-ground situation so that no-one is misled).
Best Regards,
Andy Townsend, on behalf of OSM's Data Working Group.
