I have a few responses to this and your broader point. First of all, and to be more blunt and less charitable, I don’t choose to put my life at the massively increased risk of injury and death of riding a bike vs. a car. Saying that we should be most concerned with those who are in the most danger ignores their conscious choice in making a dangerous choice in the first place. Now on its own this would be a ludicrously callous point, but it leads to my next one...
Cyclists on busy roads put not only their own lives at risk, but the lives and wellbeing of others as well. As a pedestrian cyclists and scooterpricks blasting past are the danger, and as a driver having to veer into oncoming traffic to avoid them is dangerous. The tendency of cyclists I’ve encountered to blow red lights and stop signs presents the danger of a car accident as one vehicle swerves or slams on brakes to avoid them.
Finally I don’t want to hurt or kill someone and if I did I’d be devastated. The fact that plowing into a cyclists while in a car is likely to leave me relatively unscathed physically doesn’t imply a lack of harm. Careless and selfish behavior predicated on a kind of nonexistent moral high-ground is the core of why it is so popular to utterly despise cyclists. We’ve all had to deal with the attitude of superiority and belief that cyclists are somehow saving us from ourselves. Of course people have a bad reaction to moralizing, proselytizing people who think the rules of the road don’t apply to them.
Choosing to ride a 10lb metal frame with just a helmet in motor vehicle traffic is manifestly unsafe, it was unsafe when you decided to do it and unsafe now. Shrugging and telling everyone else to take the responsibility for your safety onboard because you wouldn’t is obnoxious. It is especially difficult to accept when one has the perspective that despite the hype from a minority, cycling is not going to save us from ourselves.