Folks,
All I can say is most of you are obviously talking about matters of which you have no relevant knowledge. That is, takeoff performance calculations and accountability, and the used of reduced thrust takeoffs.
That the aircraft becomes airborne close to the end of the pavement signified nothing.
The Antonov at Canberra is nothing exceptional.
The video that is your "primary evidence" shows nothing exceptional, and it looks like a very well controlled rotation and initial climb, to me. The initial rotate attitude may have been a little low, based on the slight increase toward the end of what appears to be clearway. Without a runway survey, I cannot assess the runway plus stopway plus clearway, so I have no way of judging where the screen height should have been achieved in the video.
Tootle pip!!