Well, BAR posted that starting July 2020, they are pretty much checking all cars manufactured past 2000. Even if for whatever reason they don't have all CVN from the manufacturer for a specific model, it is quite easy for the machine to compare the CVN vs all other smogged cars of the same model across the state. If it is an unique one, it is obvious that something's going on and the machine will send you to a referee to look into what's going on. Keep in mind that they have been logging the CVN information from all smogged OBD2 cars for years, but just not acting on it. Now they just decided they logged enough data to recognize what's what.
I guess they can do something with the new cars. But not much they can do with a smog station machine hooked to a 15-20 year old ECU which all id information it could report over OBD2 is Cal ID and CVN.