There should already be laws concerning driving with obstructed view. If they're violating that, give them a ticket for that.
The headlights aiming wrong can be fixed by tilting the mount. If they fail to do that, then they're likely afoul of the state's vehicle safety regs on headlight aiming. Again, give them a ticket for that.
Also, what's the measure on this? If you do a 4/6 drop, your headlights are aimed higher. Did you correct that?. Is a police officer going to use this law as an excuse to pull you over your 4/6 dropped truck and "check" to see if your car meets the requirements, all the while he's peeking in your cab, trying to find something incriminating? I don't live my life in a way that I worry, but I also don't want law enforcement thinking that snooping on me without cause is okay.
Passing a law that targets people who modify, and not the ill result of that modification, can be used to persecute people. Look at lowrider culture. Back in the '60s you could get arrested and have your car seized for driving a lowrider. It was a way of harassing people of Hispanic origin.
It looks to me like someone thought this was goofy, didn't have an appreciation that somebody worked hard to mod their truck, and started a petition in bad faith. Now the governor sees the opportunity to win some cheap votes, so he's making it law. I'm no fan of the squat, but this is not a good solution.