@jonny Because that's the properties of the tool they were promised.

If you, I dunno, go up to a friend or hire a secretary or go to a travel agent -- all the prior metaphors the companies selling these are instructing people to use -- and ask them to help you plan a trip, they're gonna either say "yeah here's a map that I got from somewhere I trust enough to use myself" or else say "nah" and you won't have anything.

The idea that "I'll draw you a professional looking map, it'll just be wrong" is completely, well, off the (metaphorical now) map of anything the companies providing these are giving to their users.