"She was BU by leaving a dog in her car"
Not if she cracked a window and was running in quickly.
Unless you are largely pregnant or have to struggle with a car seat, then you don't need a P&C parking place.
As others did, I managed my 3 without acessable buses, internet shopping and P&C parking.
I find people with walking children getting on the bus with an unfolded buggy, more annoying, especially when someone is left in the cold with a newborn.
I wouldn't equate my dog with a child, but I would equate the need to be close to the supermarket as a greater need with a dog in the car, than someone with a child that isn't a struggle to get out of a car seat.
I take my Mum out in a wheelchair and have had two children with SN, I still don't understand why it is such a problem to get about just because you have children, tbh and especially if you have a car.