That J20 looks a hell of a lot closer than that flanker. And I say Shopped as I am not sure that the Z10 would react well once the exhaust from those engines hits the air it’s trying to chop though.
Helicopters are notoriously fickle in regulars to air conditions and a fast moving fixed wing cutting close to one leaving a mess of hot air and jet wash is not something the chopper likes. At the very least I am betting that the language expressed over the radio from that helicopter crew was less than technical and quite loaded.