a huge number of those addresses here or in Bucharest are in front of NOTHING.

Examples from SInaia.
https://www.openstreetmap.org/node/9587611380
https://www.openstreetmap.org/node/8092889260
https://www.openstreetmap.org/node/2411079007
https://www.openstreetmap.org/node/3412415126
https://www.openstreetmap.org/node/9587657637
https://www.openstreetmap.org/node/9587611385
https://www.openstreetmap.org/node/9584754765
https://www.openstreetmap.org/node/2411336824

Extremely notable place in Bucharest, seems VERY well positioned: https://www.openstreetmap.org/#map=19/44.43777/26.11880

Please explain that.

And how some addresses by you are positioned in such a way that they are right on the place of already existing address POI which were already added (I wrote you a comment of such a place, but you didn't bother answering).

"we don't need mappers of such kind" - do we need those who add info on the map in such a way that it can't provide any value to users?

Report a complain, yeah, would be interesting to see what DWG will say about sublime mapping like that.