Not to be too terribly critical of realtors, but my experience growing up in a beach town showed how silly easy it was to become one. It seemed that nearly every divorced mom in town became a realtor. You simply took some CC courses and took the license exam. The course work and the exam are, well, pretty simplistic. At least compared to some of the exams in other fields, lest say my Geologist or Civil Engineer exams or even my commercial pilot's ones.
So they not being aware of the rules is not surprising. Remember these are the same people that let their kids drive ATV's & golf carts, bring dogs into restaurants and so on. There is a general ignorance of the rules and this is coupled with a sense of entitlement. It is kind of like when I was living in Italy, my friend was driving the wrong way on a one way street (old medieval style town, all streets where one way). I pointed to the sign and mentioned it. He replied, "those signs, they are for the "little people.""
Personally, I just shed my last vestige of property in California. I hired a photographer I had used before and told my realtor, this is who we are using. He had a subcontractor that did the drone work, who was 107. The house sold in 13 hours, I don't think the drone work clinched it. It is interesting that Laguna Beach is a "Drone Free Zone." Which is pretty much ignored, since they don't own the airspace. The list of things you can't do there is pretty long, kind of why I felt somebody else should enjoy the property