That's not to say that "it's their own fault for getting hit", of course.
The proper comparison should be cars there vs no cars there. Once the cars are gone everything changes. No longer do bikes need to swerve around cars. Suddenly there's room for them. So that could reduce the risk of them hitting a pedestrian.
Very often a car can block an entire intersection, because they gambled that they'd get through, but then got stuck. A bike will never block things like that. And I'd wager those cases are much more dangerous for all kinds of accidents. The car may be blocking visibility, so that the cyclist and the pedestrian can no longer see each other.
But my comment was actually not about safety. It was about quality of life. It just happens that it ALSO improves safety.