The video is valuable documentation of real world pax behavior however disappointing it may be to us and the regulators - who may be disconcerted by this real world behavior.
The certification standard is everybody evacuated in 90 seconds using half the exits.
In the video, I don't see any movement towards the exits for a full two minutes. Observe that this affords many pax the opportunity and temptation to pull stuff out of the overhead bins.
Observe also that "Remain Seated" admonitions were largely ignored. Survival instinct prevails.
Kudos to the fire crew who got the fire under control and helped catch pax at the bottom of at least one slide.
Cabin security needs to be a top item in a post RTO checklist. In this case we were lucky. The next time a fire breaches the cabin in under two minutes, we won't be so lucky.