No strong evidence but this things* come from people really disliking cyclists, at least in my experience.
*supporting mandatory helmet laws, mandatory insurance on bicycles, other bicycle taxes, license plates on bicycles and applying car-related legal requirements in general, requiring driving license to use bicycle, ban on cycling by children, opposing safe infrastructure such as segregated bike lanes, opposing any bicycle infrastructure, wanting to ban cycling on roads, wanting to remove cycleways.
*supporting mandatory helmet laws, mandatory insurance on bicycles, other bicycle taxes, license plates on bicycles and applying car-related legal requirements in general, requiring driving license to use bicycle, ban on cycling by children, opposing safe infrastructure such as segregated bike lanes, opposing any bicycle infrastructure, wanting to ban cycling on roads, wanting to remove cycleways.