1. Explain how they are wrong?  Iterative refinement, mate. 
2. Have you read what `=ridge` is for? 
3. This is renderer problem then. Complain to them if you want them less visible. Or in your application, reduce their visibility. You are also deleting this for everyone.  And , ah yes, you are using  "hack tools" too now. iD is also "3rd party" if you claim this way. Are you uploading to the APi directly? 
You are committing vandalism by mass deleting while claiming others are graffiti. 
5. One Feature One Object. You have not added  `=ridge` to `=path` either, which is still wrong. A `=ridge` is more continuous and longer. A `=path` has many attributes that can be split.
6. EDM is not the same as `=ridge`. SRTM is  not the most accurate. Moreover, the contour is also generated artificially. 