I suspect all of these "paths" are automated additions to their map, but without the proper accompanying information it is quite irresponsible to show these.
More than decade ago, I was completely addicted to adding Bay Area trails to OSM. It was a complete greenfield, and incredibly satisfying to see the map of your favorite mountain bike park fill up with trails. (Henry Coe Park is huge!)
There isn’t much to be done anymore locally: somebody even walked all streets of Sunnyvale to annotate the houses with their street number!
But when I hike in a far away place that has unmapped trails, the GPS comes out and the hike becomes a mapping expedition.
A goal of OSM is to map _what we want mapped_, not what makes commercial sense to map.
I'm not saying OSM is more complete than Google maps, just that the incentives are different and therefore the coverage is different.