As said, there's nothing unsafe about a drone on an airplane that isn't shared with dozens of other items.
The only issue is the batteries which, have to be carried on.
So, whether you put the drone in checked luggage or carry-on, keep the...
This thread seems to be over complicating things. Flying with your drone is no different than flying with a slr camera or a tablet. Batteries in your cabin luggage - that's all there is to it.