Part of it is understandable because of the way vehicles are designed these days which is making it harder to figure out how close you are to certain objects. 10 years ago it wasn't so hard, you could easily jump from vehicle to vehicle without the slightest bit of concern.As silly as that sounds, you are correct. People become way too dependent on technology assistance for driving and totally hinders their capabilities in general. For example, someone getting used to blindspot warnings eventually stop looking around for themselves when changing lanes.
Well it requires a change of habit, instead of just relying on looking outside with our eyes, now its that and using the camera. On top of that even some more thought into how we let other drivers drive alongside of us.10 years ago there weren't a lot of vehicles that had massive C-pillars with tiny windows to the point where you literally couldn't see your blind spot at all. It's just the overall design changes that have been made over time made these tech kind of crucial. You can still get around it without them no doubt, but it does make it a bit easier.