Does anyone know what is happening with the keyholing in this video
This again huh? It's a Strategic Foo-you Agency Psyop. Don't interfere with our comrades while they are working. This kind of operation won't be able to fool anyone with a brain, but it can work on the general populace. And if lucky, US politicians, members of the US military, and "China experts" in the defence research establishment.
To be honest, there's really no point in talking/arguing with these people. They can't be convinced no matter what. They want to believe in something emotionally, and you can't debate with an emotion.
They want to believe that a country that has produced firearms and ammo for decades and has exported those firearms and ammo to the US for people to test, all of a sudden can't make a bullet go straight. Hell, there are many, many videos of the QBZ series actually firing "normally". Let them believe, ignorance + arrogance deserves punishment.