Drilled mine before I could reach out to them to tell'em not to. Immediately removed the plate and left the empty placard. There are plugs available but the holes are small enough to be ignored anyway so I pulled the placard and left them; no regrets.
In reference to the front license plates laws, there was literally nothing to gain by having front license plate laws. It was just another tool for selective enforcement.and if they want to nitpick, there are already 99 other things to nitpick over. If all they did was harass people for no front plate here, they wouldn't have time to do anything else. Got cited three times in one year for no plate; do you think I added one? Nope. Get used to it. Less than half of the vehicles passing me on such stops had a front plate. The dumb law was eventually replaced with one targeting aftermarket lighting, such as LED and HID in reflector housings. At least that one can make sense and haven't heard anything thus far about it being abused.