How many bike riders got themselves killed in intersections?
Bikers should indeed be very observant when approaching crosswalks and intersections. And they usually are, because if nothing else, their lives depend on it.
And yet, I keep on running into situations where I think to myself, "How in the hell do you think you can survive while doing that!?" Here's the thing. The level of lack-of-foresight that makes someone a cringey inconsiderate nuisance in a car is about the same lack-of-foresight that makes someone a likely organ donor on a bike.
Tongue in cheek tinfoil hat stuff: Maybe the bike trend is just a machination of aging oligarchs who want to ensure transplant organ supplies? Biking is popular in exactly the places where the population is healthier (better donors) and left leaning (more likely to donate.)