You know, I get it, they're probably just an asshole. Maybe they're having an emergency, though. How about just letting them get around in case there is a good reason for driving recklessly? Or maybe just in case they're nuts enough to make things violent?
I could be wrong but it looks like a dual direction dash cam. Since it’s the internet, the text and pic might have never been related. Also, the person doing over 70 in a 50 couldn’t overtake at 20? The whole thing seems like rage bait.
Lived in Korea for awhile, and they generally seem to not have this kind of vindictiveness or self-righteousness. They're usually like, "I dunno. Either they got a reason, or it's not worth the effort for me to do something about it."
That said, social pressure is much more effective here, so the vast majority of people fall in line. See COVID