Well yeah, they were going below the speed limit. That creates dangerous conditions.
If they were doing 65 in a 65 and everyone else was doing 85, the cops can’t do shit because they’re literally following the law.
And if my going the speed limit is “dangerous”, then it’s the regulations that are wrong. Not me. They should change the speed limit if it’s a problem for me to follow the posted laws. I’m not the one causing danger, the law is.