Hi Ed, 
I understand your frustration, but OSM in the US reflects legal restriction in terms of roadway access restrictions, and it's not really up to us to decide what's legal or not. And since your use case is an extreme edge case where the designated routes are delibrately not used, I think it's not unreasonable to expect that some roadways are not optimal for bikes, and that the tagging according to guidelines is not an issue for the vast majority of cases.