Yes, about 700 people die in bike accidents every year, and the vast majority of those are either kids or idiots riding at night without lights or against traffic or some other stupid thing. AT A GUESS less than 100 people are killed annually on US roads while riding bikes in a safe and responsible way.

45000 people are killed in cars annually.

Even per hour of exposure (IE one hour on bike versus one hour on the road), the statistics show that bicycling is safer than driving a car.

People who don't believe this are almost exclusively people who have not ever been on a bike as an adult, or at least not in traffic (IE just for recreation, noodling around subdivisions or on closed bike paths).

In other words, they pretty much don't know what they're talking about.