osm.org/node/4950379415/history

disused:amenity=pharmacy and healthcare=pharmacy are in conflict, one claims that pharmacy existed and another claims it exists
Is this pharmacy existing or not?

osm.org/node/12250087136 osm.org/way/722971735

czemu punkt na linii jest otagowany tak samo?

osm.org/node/10220972133/history

is this mission house some sort of religious office? Church?

osm.org/way/1125226628/history has 景点 = 四望观

What is the meaning of this unusual key? Is this tag needed?
Or maybe can it be expressed in a more typical way that would be easier to understand?
Or maybe this key can and should be documented as useful tagging schema?

osm.org/way/1373645282/history

cycleway:surface and bicycle=no seems like some kind of error