That's absolutely right you say here.
Safety is about performing and/or anticipating actions against situations that may cause you harm;Specially if you live in a non well reputated hood.
Having your tags covered on the web wouldn't prevent an undesirable neirbor drive away with your car during the night while having a relaxing sleep after a tough day at your job site.
I'll be more worry handing my debit/credit card to the clerk at the gas station then covering the tags.
For example,there's gas station where they ask you for your id if you paying with debit/credit card & hold on to them inside the clerk's cabin while you pumping gas several feets away & your stuff outter of your eyesight.
I had an huge argument with the clerk about that situation & following customers didn't fill they cars because of that.
The clerk claimed he had the right to do so following his words itold him: Really ? Ok,so what if money go missing from my account ? Did you wonder who i'll be coming for ?
You can't withold no individual's sensitive info such as debit/credit card & id more then verify that i'm who i say i am.
With that said i had all the station's info such as business license number & called the NYS customer affairs reporting the situation.