All one has to do is visit a US National Park and watch the tourists for a few minutes: it quickly becomes clear people do the most stupid, childish, and idiotic things to get selfies. If these same people had drones, the parks would be trash heaps even worse than they are today.
People putting kids next to moose, bears, buffalo for a photo op? Seriously? Yes, watched a gal run up a hill to get within ten feet of a bull moose to get a selfie. Another wanting her kid to go stand next to a buffalo. The park servive has even more experience than I do, I trust the rules are there for good reason. Also - someone commented a hundred visitors a day: no, it is like average 13,000 visitors a day, 4.8M a year. On good summer days, more than 25,000 isn't uncommon.