I honestly don’t get what the problem is. I have a plate holder/rim on the rear plate, and no plastic cover. The front plate has a plain holder and a clear plastic cover. Neither obscure the plate, and you can see the registration sticker.
I know you are not a lawyer (unless you really are), but what part of the linked code might I be violating? I can’t even understand their outline system.
The back plate looks like the bottom of the numbers are covered slightly by the frame. The code says the frame or cover can’t interfere with the “reading or recognition” of the plate by a “remote emission sensing device.” If these are supposed to be able to use Optical Character Recognition technology to actually read your plates, the cutting off of the numbers (no white space underneath them) might be a problem.
I remember reading a short article about these suckers a few years back. Some large West Coast city was testing them. The cruiser just drove down the street and the oncoming traffic was being scanned continuously by the OCR reader on it’s roofmounted lightbar. The statistics were just staggering. The device was reading and checking the DMV registrations status of every car it saw and then beeping or otherwise alerting the officer driving when there was a stolen vehicle hit or expired registration hit. The city said that it could cut down dramatically on joyriding by using such a tool.