Personally I would expect a road bike to be usable on 100% of paths on a maps suggested route. I would really like something that could look at my strava history and make suggestions for other routes or trails to try, though.
Despite it clearly being called a "road" bike you expect it to be usable on all paths?
I mean I'd be with you if by path you mean pavement or bikepath but there are an awful lot of paths that don't meet that criteria. If you want to be able to do all paths, buy a gravel bike at the very least.
I drive a vintage corvette and think google maps should map zero gravel or dirt roads because I dont want my paint chipped. Google should only map paved roads because of what I drive. Sounds ridiculous yea?