Not every data item in OpenStreetMap can have an immediate impact on the rendered map. But you can make every data item visible on a map and share the links or share the data, no matter how much the item is special interest. This is the purpose of Overpass API and Overpass Turbo.

OpenStreetMap's processes are carefully designed to minimize the privacy footprint of the mappers.
Nonetheless, the principle that any edit shall be attributable means that some data is still recorded.
An overview is given which data is recorded at all and which of it gets available to whom.

New processes to agree on tagging suggestions and their interaction with the editing software available on openstreetmap.org