You have small point but it stands on very shaky ground. This is like back when they said they wouldn't ticket you for not wearing a seat belt, just get a warning. Today you AND your passengers get ticketed hundreds of dollars. You can also whine all day about this being a "slippery slope" argument but you only have to look at the "slippery slope" use of your social security number - which
originally was supposed to be solely for social security alone - to take a guess at what the future use of Real IDs might look like. One step at a time...
Starting with Real IDs that everybody must use just about everywhere for "federal uses" and getting everybody into a single federal data bank is only the first move, but a very key and critical one. The feds must first be able to positively ID everybody before the Real fun begins. For example:
You rent a car for a trip. You use your Visa card. The government today has access to your Visa records if they have reason to do so. That's how the feds can know you rented a car today. Today there could also be a hidden chip on the car for sending locating signals in case you stole the car from the rental company. This is already today's technology but it is not integrated.
However, think ahead a little. The government now steps in regarding that chip and adds "enhancements". Now when you drive to the next town in a hurry, you find later a couple of speeding tickets billed to your Visa card because you broke the law.
In fact this form of income excites the government so much that the next step is to make it a Law to imbed every auto with a chip. Congress could also make it a law to place positive ID chips on your car in order for you to even start up your car - all for your "safety" of course. What's the REAL result? You now have a "cop" on your tail day and night.
So unless you walk everywhere, the government now knows where you are almost all the time. Of course they eventually could just go to the next step and make it real easy for them by just imbedding the chip into you....for your "safety" of course.