Careless/reckless driving is entirely normalized in America. Think of the number of people you see speeding, rolling stop signs, blowing through pedestrian crosswalks, speeding up to make the yellow light and “accidentally” running the red. Think of all the people who chat on the phone, attend work meetings, watch videos, do their makeup, and eat entire meals while behind the wheel of a moving car. Think of all the people you’ve heard essentially bragging about how much they speed, who bemoan all the “slow” people on the road who are just going the posted speed limit, or who feel they’re being unfairly targeted when they get a speeding ticket for going ten-over.

Chances are if you’ve driven a car in America then you yourself are guilty of having done some of those things. I know I certainly am, though I’ve been intentional about taming my own hubris behind the wheel over recent years. But it’s hard to accept that what is normal to you is also wrong or dangerous. Especially in a survivor biased environment like reckless driving culture, where nothing bad generally happens to you until it does and then as people get more reckless the higher the chances are you won’t walk away from an accident. And so when you see a post online shaming people for something you do on your way to work every day, you get defensive because to you that’s just normal behavior.

Edit: To be clear, I’m not defending these people or their actions, just offering an explanation for OPs question. Still, I expect to get downvoted for the very reason I just articulated.