See https://www.openstreetmap.org/note/3504757

Quoting from there:

Thanks for bringing this up. The path is already tagged as sac_scale=alpine_hiking and (in places) sac_scale=demanding_alpine_hiking, which indicates it requires hands or full on scrambling at times. This tagging seems appropriate: experienced hillwalkers who are confident scramblers can use this path.

It might be the case that AllTrails is not presenting that information, in which case it should definitely be fixed to do so.

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Deleting the path from OpenStreetMap will not help, as someone who is competent to use it will likely add it back in future. There is a reasonably strong Strava Heatmap trace along the path, indicating that a number of people use it.

The appropriate fix for this issue is for walking apps and map renderers to take sac_scale into account when rendering paths.

There’s a bug report open for osm-carto about this (https://github.com/gravitystorm/openstreetmap-carto/issues/1500), and I have contacted AllTrails to ask them to pay attention to sac_scale.