Earlier quoted context omitted.
Cycling in a vacuum is safe-ish and not a particularly risky affair. Cycling on a shared road with automobiles going eight times your speed and weighing some 250 times your bipedal vehicle’s weight is not so safe.
Differences in speed and mass are largely irrelevant if collisions don't occur. You can minimize the risk of a collision by following the rules of movement on the road (right of way and positioning) and anticipate if someone isn't following those rules and take appropriate action to avoid a collision before it's imminent. If passenger cars, large trucks and buses. and motorcycles can share the road, so can pedalcycli…
Breaking: Helmets and safety gear are largely irrelevant if collisions don't occur.
(Hey, PPE is also largely irrelevant if you are never in a situation where a virus can establish a foothold on your person!)