It seems like there are rules against flying over people and traffic and flying beyond line of site. It seems like those rules basically make it impossible to fly in a city. That does not seem fair or practical to me. Why do you need line of site when you're really going to be controlling the drone from the view on the drone's camera? Why can't you fly over people and traffic if you're high enough not to hit anyone or anything, and you're able to control the drone and land safely? It does not seem likely a drone is going to fall out of the sky and hit people.
I agree with the rules. Maybe not every word of every rule, but I broadly agree with the requirement to be able to see our drones as we're flying them, and I agree with the prohibition on flying over members of the public. After all, I'm a member of the public, and I don't particularly want drones crashing down on me or my kids. I enjoy having the right to fly, but with that right comes a very strong responsibility to avoid endangering anyone who didn't sign up for the risk.
A drone's camera can only see air traffic coming from within its field of view, and its field of view isn't wide enough to see to the sides and behind. Our drones fly much slower than most manned aircraft, and our drones are much smaller and more difficult to see than they are. As VFR pilots, we are responsible for seeing and avoiding other traffic, and to do that, we need to see.
In popular areas, I've encountered other UAVs while flying my drone. I was able to see and avoid them only because I had VLOS (they're really hard to see on that tiny screen, even when I know where to look). True, the "big sky" theory often works to avoid collisions, but over the long term, it's not reliable enough.
Read the "Crash and Flyaway Assistance" forum on this site long enough, and you'll see that drones do fall out of the sky, frequently enough, to the surprise of their owners. Propellors break, battery connections disconnect, ice forms on aero surfaces, etc. In cities, GPS can be lost in the canyons between buildings, causing the drone to go into ATTI mode, and many pilots don't have experience controlling a drone in ATTI mode, especially not while BVLOS.