Can there really be anything beyond the tiniest fraction of cyclists who make a "living" from cycling? Do you mean to suggest that this tiny coterie of allegedly expert cyclists are the cream of the crop for commuters to emulate?

"People who cycle for a living" Who dat? Food delivery people? I didn't know those people had anything on their broken down bicycles but a basket. Messengers? One speed and maybe brakes. Or maybe you meant those fellows recently on TV cycling about France.

There is a lot of speculation, conjuring, wishful thinking and manipulation of various factoids regarding reducing bicycling risk, often posted or repeated by those with various self-interested agendas to promote.

There is little actual credible evidence of any bicycling product significantly increasing or decreasing the risk of injury or death while bicycling.