Do you know where these leaked videos are? Also do some of them have subtitles? Would like to hear them.Believe it or not, this is by intention. It psychologically allows the other side to calm down gradually and engage in rationalising away the progress made by China's military. Full on Sputnik moment style is more psychologically traumatising and creates a heightened emotional response. This allows the US to downplay Chinese military developments unless they are thinking about it objectively. Even just one of these larger UAVs is something the US has not been able to fully develop and put into service. They only have the Ghost Bat and the like of small to medium, subsonic drones which Chinese aerospace representatives have mocked in leaked conference vids. The Chinese CCAs are heavy supersonic. There are also about 4 new heavy CCAs. US has yet to put a single medium one into service.
Both have all moving wingtips like J-XDS.UCAV with different intakes, one DSI one Caret