The same logic applies to human drivers - various bike sizes and types are harder to see and adapt to. If everyone rode a Jump bike, bright red and upright with blinking lights, it'd be easier to see them all quickly. But I'm constantly seeing tiny mopeds, recumbents, kids' bikes -- it's all harder to spot than a Jump bike, even for a human driver.

So, why fall back on the status quo of a human to spot them? If SDCs are proven to do it better, then I will definitely cycle more once there are more SDCs. It's all about evidence, show me the evidence SDC's are better, then I'll be 95% on board.