I don't think that expecting other cyclists to do a decent job of respecting the rules of the road is any more "safety nanny" than expecting motorists to do the same. Riding on the wrong side of the road is DANGEROUS! I know, I got hit doing it, and I don't do it anymore. I feel bad when I see other cyclists do it, because I don't want anyone to get hurt, including myself. I've had a couple close calls with wrong way cyclists.