In many ways nothing has changed, as a sensible driver you've always had to be wary of the bully belligerant or plain absent minded pedestrian or cyclist, and if they decide to walk or ride out in front of you that you have taken all action you can re speed road positioning etc to not endanger them, this didn't need to be written into the highway code it's plain common sense, you take trebly more care if you drive a large vehicle.
The sensible pedestrian/cyclist isn't going to suddently start throwing themselves in front of you, because the sensible know that being in the right whilst in traction or on a cold mortary slab isn't an ideal they want to pursue.
I do however think this is just another of the many changes we're going to see as those in charge seek to remove us plebs from our private car transport, particularly in towns and cities, i expect we'll see more and more permanent road segregation schemes, where the amount of road available for cars etc wil diminish as space for segregated pedestrian and cycle/scooter traffic increases.
The funny thing about drivers who are really dangerous to pedestrians, is from what i've seen those who drive at main road speeds in housing estate roads past multiple parked cars sticking as close as they can to 30mph, if the unthinkable should happen they can trot out the ''i wasn't speeding (even if i'm as thick as two short planks)'' excuse, women feature far too regularly in people you see driving too quickly in confined spaces, and this is why blanket 20mph limits are appearing.
Supermarket car parks are another place where people drive far too quickly, but soon as it comes to maneuvering into a parking slot you could sit there brew a cup of tea and dunk and eat half a dozen choccy biscuits waiting for them to park, on the piss, and then open their door onto the perfectly parked car beside them.