Can't help but think if the police are driving SUVs that are high off the ground, they wouldn't see this problem or be as affected.

Not that you're not right!

Another problem is aftermarket HID and LED lights which might not have any sort of legal pattern at all.

I liked reading (for years) this site regarding automotive headlamps, and there are problems:

https://www.danielsternlighting.com/tech/bulbs/Hid/conversio...

this site has been around for a while, see what they said about the NHTSA and glare in 2000:

https://www.danielsternlighting.com/nhtsa/NHTSA.html