edit: I will keep both though ;)
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The data is virtually nonexistent in most places, at least until StreetComplete started asking for it, but I imagine that many will find it a useful addition if it starts being rendered or used in route calculations now that it's available here and there. (Which then leads to more people seeing the use and contributing that data, which again makes it more useful.) Finding your way in an unfamiliar place in pitch blackness is a lot harder regardless of safety.