Im Not sure where this guy in the video is, but in most US states there are laws about "altering" your license plate. The police could easily make a case that you altered your plate to be unreadable to police cameras.

example from my home state

Section 139. (a) Whoever intentionally and maliciously removes, defaces, alters, changes, destroys, obliterates or mutilates or causes to be removed or destroyed or in any way defaced, altered, changed, obliterated or mutilated, the identifying number or numbers of a motor vehicle or trailer shall be punished by a fine of not more than one thousand dollars or by imprisonment in the state prison for not more than three years, or both. The possession of any motor vehicle or trailer by a person who knows, should know, or has reason to know that the identifying number or numbers of such vehicle has been removed, defaced, altered, changed, destroyed, obliterated or mutilated shall be a prima facie evidence of a violation of this paragraph.