When an accident happens (which it will, if it hasn't already) and there's damage to a vehicle or worse an injury or death to someone then the police traffic report will make what assumption, exactly? Isn't it their job to determine who was at fault, or are you saying no one will be to blame, or they're all to blame? Who pays for the damage?
Those who say they are avoiding the prom have made a risk assessment themselves on the probability that an unmarked junction creates more problems than it solves. I know two people, one of whom is certainly not elderly, has come to that decision.