He doesn't contradict himself. He said, No, riding a bicycle doesn't make an individual propotionatly more suseptable to head injury than other activity. If it were true, he would have that information avalible on the website. He doesn't have that info because head injuries happen to everybody doing many things, not more often to cyclists compared to any other activity. This is bourne out out in evidence of all receiptents of head injuries. You run as likely a chance of a head injury as a pedestrian as a cyclist.

The question is why wear one only while doing some activities and not others? This runs counter to same roads, same rules, same rights by selecting cyclists to follow different rules that are not based on merit.