With any map application comes data problems. Having a system to properly report these would be ideal.
This could technically just be kagifeedback but maybe with a link from inside the Maps that prefills a kagifeedback post or something? (including some information to help check where the data came from, see https://kagifeedback.org/d/7604-add-data-debug-tool-for-maps )
this would also involve removing/replacing the 'improve this map' link to mapbox in the bottom left (i) icon because not all data is mapbox/osm data... so reports shouldn't go to them directly