I'll agree that the consensus is that they do not belong in OSM. And that
in some cases one might violate some copyrights. They can go in e.g.
wikiloc or GPSies if the authors want.
Problem is that when you delete them you might get into an edit war. In
that case you have to contact the Data
We've had this discussion before, and you're representing the consensus: no
walking routes that aren't marked on the ground, and you should be able to
walk the route by following the marks or signs. Or we risk, as you say,
that everyone will just make their own routes, maybe put them on their own
