Are you Mapy.cz employee?

If yes, then please follow https://osmfoundation.org/wiki/Organised_Editing_Guidelines - in particular "user’s profile page should also include links to the wiki pages of the organised edits and organisations they participate in on an ongoing basis. "

and "After the Wiki page is set up, the affected OSM communities should be informed through a suitable post: the general-purpose “talk” mailing list or, if the activity is limited to one country or region, on a regional mailing list or other channels which the community uses the most. This should be done no less than two weeks before the activity is started."

I am not aware of mass note closing being discussed with Polish OSM community. Where you discussed it?

And if you are not Mapy.cz employee please to not pretend to be one

see also https://www.openstreetmap.org/user_blocks/17438