I occasionally contribute to OSM. You just send your edit and they are directly live. I don't think there's prior moderation. On these apps you log in to OSM using an OSM account IIRC (though I mostly use EveryDoor or directly osm.org for this, occasionally StreetComplete, I don't contribute using Comaps)

yet google was caught red handed stealing openstreetmap data for years and all it led to was a timid Ooopsy letter.

the real reason is that user content, either you don't have anybody contributing, or you're flooded with abuse. there's no middle.