Flap retraction on that Alrosa video is absolutely fine, - have flown on TU loads of times.
The a/c was probably MTOW too in view of the useage.
I think it's the last 2, flying, and have seen them sitting outside DME a few times on arrival.
(lots of Russian airports currently look like huge scrapyards).
About 40secs to rotate from standing (longer than a typical A320/737) flaps retract at about 70 secs....so what's the story?
Looks perfectly normal.