Thanks for your post on this.
You have indeed come to the correct conclusion that these places are derived and supplied from other sources. We are aware of the issues, and appreciate your comments and desire to clean the map of these. Currently, they are (unfortunately for our Map Creators) mainly displayed on Map Creator, and not in our core database and i.e. in navigation devices or vehicle systems etc. We have been testing ways of integrating the legitimate data out of these sources and this is still ongoing.
We appreciate your patience with this, thanks.