If you are still looking to integrate OSM with your Expo app natively, would you like to give it a try with this new library?
https://www.npmjs.com/package/expo-osm-sdk
It can fulfill a few basic requirements with OpenStreetMap tiles. It doesn't work with Expo Go or Web (fallback only), development build only.
No API keys required for now.
Built on the MapLibre GL Native rendering engine.
Full TypeScript support with comprehensive type definitions