Assume that campsites with backcountry=yes have no facililties

[rhhsm]

We camped on a couple of backcountry campsites, and I was surprised that SC asked if there were showers, power supply and toilets.

I think SC should assume that tourism=camp_site with backcountry=yes are "without facilities" (quoting https://wiki.openstreetmap.org/wiki/Key:backcountry) and not ask for them. I didn't check if backcountry campsites are included in the Camp Type quest: I think they shouldn't be because it can be safely assumed that for such campsites, only tents are allowed (maybe caravans and camper vans are not disallowed, but "The access is usually restricted to foot, bicycle, canoe or ski" so they can't get there anyway).

I still think it is a good idea to ask for availability of drinking water though, as there may be natural sources of drinking water available for such sites.