The cache is pure and straight files-in-folders. This makes it trivial to browse the cache by hand:

cd .cache/offpunk/https/news.ycombinator.com/item cat "id=46943752"

So it could be trivially shared.

The "netcache" tool gives you the cached content or, with --path, returns the path were to find the contentd.

The only point is to preserve the file-modification attribute, which serves to know the age of a cached ressource.