Something to say? There is no way to disagree with that. http://www.policy.rutgers.edu/faculty/pucher/Irresistible.pd..., figure 10 shows that fatality rates per 100 million km cycled of 1.1 and 5.8 and injury rates per 10 million km cycled of 1.4 and 37.5. In 2007, it was 5 to 25 times as dangerous to ride bicycle in the USA as in the Netherlands.
I doubt that has changed for the better for the USA since.
Anecdotical evidence: when my (Dutch) son of 18 went on a student exchange to the US, he woke up in intensive care after six weeks of helmet-less biking. Nothing ever happened on his 6-year daily 45 mins commute to school in Amsterdam.
When in the US, where nobody is used to bikers, and there are no bikelanes: wear a helmet, when in The Netherlands: nobody does it.
When in the US, where nobody is used to bikers, and there are no bikelanes: wear a helmet, when in The Netherlands: nobody does it.