After reading https://wiki.openstreetmap.org/wiki/Tag:access%253Dprivate, I realized that access=private was not the appropriate tag for the private roads in changesets 159706963, 159707415, and 159707850. While they are privately owned, roads like this typically have easements that allow certain use by others. I have not researched the easements, so I chose to remove the access tag rather than use access=permissive or similar.