That graphic is quite bad.
Not all markers follow the same logic. For the "Terry's Gate" the white line seems to point to the location of the gate, while when showing homes they do not point to homes but use the icon to designate location.
Depending on what they used for TWRA Camera the camera may or may not be located on the property. I am leaning toward not on the property as there is no real reason why they would point outside of the property with the white line unless they wanted to show where it actually was.