I can't tell if you are wilfully ignoring the articles and every comment others have posted or if you are incapable of applying any nuance.
You are not a better parent than everyone commenting here. Everyone on here agrees that deliberately leaving a dog or child in a car is wrong, neglectful and if harm was caused they should be prosecuted. There is no doubt that it is inexcusable.
Posters are not talking about that situation. They are talking about being on autopilot which we have all, even you, experienced in some way at some point. In these tragic cases autopilot sadly happened when parents had their babies in the car.
I have experienced this myself with an older child. Normally walked DS to school, then came home and drove to the gym. On this occasion I was driving him to school and then to the gym.
Got in the car with DS and halfway to the gym, DS piped up in the back 'Mummy where are we going.' I had completely forgotten he was there and to drive him to school because I was in my gym gear and I always drive straight to the gym in that scenario.
DS was 5 and able to speak up. Had he been a baby or toddler who was asleep, the outcome could have been very different, as when I got to the gym I would, like always, have grabbed my water bottle and towel from the passenger seat and rushed in without paying any attention to the back seat of the car. Because why would I?