After a few minutes in the house, I’d notice.
When I would wake up from a nap or some other event and noticed there was silence, my kid’s location would instantly be queried.
What if your two year old got into the parked car and shut himself in, unable to get out while you are napping? The incidents of that happening are around half of the causes of the 35 incidents a year.
What if your toddler fell into a bucket you where using to mop the floor. Way more kids drown in buckets every year than in hot cars. Almost as many die falling into the toilet.
Should all these people be treated as criminals. They all showed a form of negligence. Why should they not suffer more punishment than the average person who loses a child.
A few minutes is all it takes in a hot climate.