I stumbled upon this.  Yes, the roads need work.  I recommend you use the presets in JOSM for the road types.  (Presents->Highways->Streets)

Here's some good rules of thumb for the smaller rural roads.  If it has a street name, set it to residential.

If it doesn't have a name and goes to a building/property, set it to a driveway (set it to service and then you can change the service type to driveway).

If it looks like you need a 4x4 or offroad vehicle set it to track (Presents->Highway->Ways->Track).

If you really don't know, at least set it to a Road so at least people can drive on it. Presents->Highway->Streets->Road.

We can always reclassify roads in the future.

If you know the road is a private road, set the access=private tag.  This prevents a lot of headaches for property owners.