Thanks for the link. If I have access to the DMR imagery and can load into JOSM, then I'll recheck and fix geometries whenever needed.

One point to note. In many cases, there are 3-4 parallel tracks in OSM, only few meters from each other, while there is only one active one in reality. All the rest are abandoned and sometimes overgrown. Earlier, I didn't understand why those abandoned trails were mapped at all... Now, looking into DMR, becomes apparent that hard to distinguish the real existing tracks from longly abandoned overgrown ones... So, LiDAR imageries are not perfect: while the geometry is super accurate, the actual trail state (active or abandoned) cannot be accurately judged from that