People will learn. The company that produces the maps, is not Garmin.
Second, it is how they produce maps that is of interest.
They do not use Satellite views, contrary to public belief.
The process is made up of maps, produce over time. Some come from county plots maps, road maps etc. They are then scanned in by a graphic board process.
So, be advise, there are always mistakes, one of the process, is you the owner submitting a report, detailing that the specific section is wrong.
Next, some people rely on Google Maps, great for cars, but not for High Profile Rv's. GM, does not take road weight, or height of structures over the road.
In addition, the Garmin, Co-Pilot and another source use the same company that produces the maps for weight and height