If I'm riding a bicycle, I am unlikely to hit a person coming up on my right no matter how focused I am on the traffic from the left. The bigger the vehicle, though, the easier it gets because there's less and less visibility of the pedestrian to pull my attention back.
If it's a visibility issue, then this really has nothing to do specifically with larger vehicles. Many small cars have less visibility than older ones due to smaller windows, larger pillars, and even lower perspectives. Take the newer mustangs, camaros, etc.
This is also my experience in my wife's small Mazda. The window placement or something makes it hard to check my right hand side blindspot. I had an easier time in a bigger / boxer Mitsubishi. I'm not really quite sure what it is but it feels like I can't see a spot I should be able to.
Granted I should be using the little blindspot mirror anyway.. but old habits
That's definitely not my experience. Maybe I'm just used to smaller cars, but when I am above it all, I feel more above it all. But familiarity aside, a higher nose objectively hides a lot more of a pedestrian, making them harder to spot.
If I'm riding a bicycle, I am unlikely to hit a person coming up on my right no matter how focused I am on the traffic from the left. The bigger the vehicle, though, the easier it gets because there's less and less visibility of the pedestrian to pull my attention back.