because normally broken roads get blocked of e.g. for bridges using concrete barricades and potential unmaintained off road roads tend to at least have warning

because normally broken roads get blocked of e.g. for bridges using concrete barricades and potential unmaintained off road roads tend to at least have warning signs and often are very obvious visible bad ideas to drive on so even if google routes people there they normally know better then to take that route through there had been all kind of cases like a (river) ferry being listed as a normal route in the map and people driving into the river at the ferry dock at night when the ferry was on the other side or people taking country side roads without any infrastructure they are guaranteed to get stuck one when they run out of gas because of navigation apps (not just google), like the app trying to send someone through the desert