when I route between two German cities via foot, most routing services choose to route via a primary road (B83) that has no sidewalks, just car lanes and a speed limit of 100 kph. Legally this is OK, as far as I understood from doing a quick online research, but I would say it is a very bad idea, particularly because there are other paths / minor roads nearby.
OsmAnd and Organic Maps behave the same way.
I don’t know what to do with this information. Should I tag this with foot=no? Although I don’t think this is the correct way, since it is not prohibited or impossible here, just - again - a bad idea.
Suggestions are appreciated.