ACS1986
If I recall correctly the path to the west is/was a permissive path, not a public right of way. This means that there is no legal right to walk along the path, but that the landowner had agreed (usually with the council) to allow public access for a set time period. Sometimes permissive access agreements end and are not renewed, or the route is changed. For the moment nobody has removed the path from the map. I just suggest that we do not from a distance remove the note regarding the blockage until the situation has been confirmed, ideally by a local mapper.

The correct osm access tag for a permissive footpath is foot=permissive (as opposed to foot=yes or foot=designated for a public footpath). As to whether we should map blocked footpaths, my own solution is to map the path so it is shown but to add the blockage so that people are not routed down it. I also add a note requesting that somebody resurvey to check whether the blockage has been cleared.