From experience, I agree with your points. One thing OSM data is ok for is land classification labels ("landuse", etc tags) as the accuracy is not as important

From experience, I agree with your points. One thing OSM data is ok for is land classification labels ("landuse", etc tags) as the accuracy is not as important at their scales and requires less effort to cleanup. Most of the work is aggregating disparate landuses into buckets that make sense for your model.