People driving without headlights in the freeway

I swear this shit is getting worse. I saw two people on i5 today driving in the dark with their lights off. The first guy, I flashed brights, then got up next to him and honked he finally got it.

Next car was southbound on i5 at 1130pm. I flashed brights behind him, nothing. I turned my lights off, then back on, then off. The asshole actually put on their hazards and kept speeding (like 80ish mph?) — so it’s not like their car was damaged. Like they thought I was chasing?

Ok so:

1. Why the fuck is this happening? Daytime running lights have been a thing for years but it seems worse in the last couple of years

2. Is there a universal sign for “turn your fucking lights on” that I’m missing? No one else was alerting the drivers to it but me.