You're not claiming the Mavic is toy grade, are you? I didn't see a previous post referring a different craft.
That's exactly what I'm saying. It's not designed, tested, built or certified in any way resembling what's required for a manned aircraft.
Don't get me wrong, I'm not trying to do down the Mavic, it's a remarkable technical achievement, it flies very well, the build quality seems good for what it is.
What I am saying is, when you hit a bird, or a motor fails, or the tiny plastic fixings holding a prop on break, or the software crashes, or the battery fails, or one of many other single non-redundant cheap, untested to aviation standard components fails you've instantly got a one kilo brick hundreds of feet above the head of whatever unfortunate soul happens to be below.
You can also lose navigation and control, as evidenced by the many crashes on here during RTH or when the pilot didn't understand what the aircraft would do in a particular set of circumstances like signal loss during certain automatic flight modes. Now you've got a flying blender you can't control doing it's own thing around a bunch of people - hoping it'll all work out OK isn't a plan.
You've got unqualified pilots with very little aeronautical knowledge or training, flying uncertified craft built like a mobile phone rather than like a 747. Would you want an aeroplane flying over you or your family if you knew it was running android/iOS/windows/etc?
There's nothing wrong with people flying these uncertified, untested little aircraft IMO provided people are sensible about where they operate which includes not over towns and cities.
I will admit that I can see an argument for what someone else said about over large clear areas like rivers and parks being arguably sensible to fly through in towns. I probably wouldn't do it myself - there's still a reasonable chance something unexpected happens and the aircraft flies off doing it's own thing - when it does you're maybe a couple of hundred meters, or alternatively 10-15 seconds away from sending your flying blender into someone's face.