I understand perfectly well what this is about, since I constantly use the strava heat map myself. And that's enough for me to wander. What exactly is confusing me about labeling trails as skits: 
1. The trail on the summer map is displayed strangely and ugly. I have no questions about the winter maps. https://openskimap.org/#13.15/42.916834/43.047630 That's good here https://www.thunderforest.com/maps/outdoors/preview / it's not very good here. perhaps opentopomap will also handle this well, so far, the changes have not sprouted there. 
2. The trail is displayed on the summer map, in fact, no one walks there in the summer 
3. The tag marks summer trails as winter trails, and in summer, some layers may not display this type of trail. 
In general, I see more problems with mapping skitur zones than benefits.