kartonage
I see no interaction from you with the user. None. So please don't assume they won't reply. The last changeset for this extension is https://www.openstreetmap.org/changeset/112692549.
Guesswork to some extent is also right and can also just be improved upon.  The user seems to take local survey data into account. 

And again calling someone "lava spammer" because they do have a different approach is not acceptable.