From the video you can tell that it went a very long time before they started with the Evacuation C-list. If they performed it at all. From pictures you can see that the GND spoilers are still UP after the PAX had left, which indicates that they didn't perform the Evacuation C-list OR they performed it unsatisfactory as the second item on that list is SpeedBrake lever DOWN, a Captain's item.
You can also see that the flaps isn't in 40 degs, which is the position the FO should place them according to the same Evacuation C-list.
Maybe they had no hydraulics available.
Do they start the APU before landing?
Were the engines shut down first before stowing/positioning flaps and spoilers?
I don't know what SOPs are for a nose wheel collapse but shutting engines down may be high up the list.