Look at the people who whine about red-light cameras. Few people complain about rolling through red lights being illegal because there aren't enough police to bust them for it. But as soon as cameras make it much more efficient, they whine and claim it's only about "revenue".
Probably because red-light cameras have been shown definitively to (a) not increase safety, and (b) raise revenue.
Are you seriously equating drones to red-light cameras?