the video did not show the speed of the plane nor the drone. If the plane is moving at 500 mph, the result will be very different.
My friend, it is China ! It is what we kindly call the kingdom of "chabuduo" which can be translated to: "more or less" but with a hint of whatever, who knows & who cares...
I live in China and fly here. I started flying my P3 2 years ago and it was fun like hell. Annoying were all these people gathered around watching my tablet, asking hundreds of questions. And then came the Mavic with its issues. Bench of stupid people doing crazy things like flying near airports. Add to that, lots of TV segments speaking about these rare behaviors (2 to 3 cases maximum) and also segments about drone usage in Syria. 1 year of non-stop bashing made it clear: Nowadays, to all Chinese citizens, you're a terrible dangerous outlaw if you are flying a drone. Sad, but brainwashing is very efficient here !
Today, in China, the clearance around any airport is just CRAZY !! 20 kms wide and 40 kms long. It does really make flying in cities almost impossible. All Beijing is a non Flying Zone. Almost all Shanghai... I am in Guangzhou where there is only one airport quite far from downtown so I am lucky. So things are getting harder and harder.
For the experiment, I don't expect it to be thorough. It might be just a showcase. But the results are interesting: showing that there might be no danger to hit the windshield of a plane. Now, it would be interesting to do the same experiment with the engine.
I also think that adding a transponder unit to all drone might be a good solution: for instance, instead of relying on GPS cordinates, the drone might emit a universal Drone squawk code and when receiving a signal from ATC, the drone will be prevented from entering the area... At least, we would clearly know if there wa a drone in the area. Because, other than the official documented cases, I suspect many to be false alarms. Like the one in UK which turned out to be NOT a drone...