If you fly under 400 ft you should never have to worry about it. Its just a reason to charge a lot more for there drones. Corporate GREED
In my (admittedly only 7 yr) experience that is not the case. I'd say as often as half of the times I fly I see some form of manned aircraft flying at what I estimate to be a fair way under their prescribed 500 ft minimum, causing me legitimate concern if I am anywhere near the top of my available legal altitude... I have lost count of the amount of panoramas I have had to abandon because some low flying 1 seater came over the horizon that looked to be in potential conflict with what is supposed to be our airspace. I for one would appreciate
any advance warning of approaching craft and even more so an accurate readout of their reported altitude, both for situational awareness, and so that I had some mechanism for confirming their height, and reporting it, with evidence, to the relevant authorities if it is under what it should be, which I suspect I would find to be the case alarmingly often !
For those wondering I am
never flying anywhere near an airport or in any location that would require planes to be under 500 ft.
And it's even worse with helicopters, who don't seem to have any altitude-based rules at all as far as I can see ! I routinely see Army Chinooks for example, flying over local beauty spots at as little as 200 ft AGL, sometimes even
below the ridge-line of the very hill I am standing on, and only just off to one side or other ! Fortunately they are insanely loud machines, so I almost always hear them coming way before I see them, but they lead to the same, if not more panicky moments as planes do. Every time I hear one and I have a machine in the air I have no trust or reassurance at all (other than visual confirmation and even that ain't great!) that it will be not in conflict with my machine...
And of course they all move so fast you have but mere seconds, or fractions of a second to locate, analyse trajectories, decide and take action if needed. It's not enough.