This thing looks exactly like how the airplane would act if ground spoilers aren't deployed upon touchdown, and at the same time nobody notices what's wrong.

At a previous employer we had a module during one recurrent sim to demonstrate exactly this. And it did exactly what I see in this video. We were told spoilers won't auto-deploy on touchdown and not to quickly manual deploy them as procedure called for. To try to land to feel how it feels. Airplane didn't want to stay on the ground and kept floating off the ground unless extra control force was applied which was very unnatural to push down like that. They would quickly make a training sim module when ours or another airline had an incident/accident.

We don't make callouts during this critical phase of flight and if you don't call it out it's easy to miss it. We don't callout "speedbrakes deployed, REV green, autobrakes off" and what you don't callout will get missed on that rare occasion it doesn't happen. Hole in our SOPs and it bit someone.

Even simple things like altimeter setting. We don't say "××.×× inches SET/CROSSCHECKED" and guess what, I've never seen the STBY altimeter missed so often. If you have to say the word "crosschecked" you'll be subconsciously forced to actually crosscheck.

With that said, I don't know what exactly happened. Maybe something else caused it. I'm only saying I've seen exactly this happen and demonstrated. It looks exactly the same. Airplane touches down nice and normal, doesn't want to stay on the ground, confusion ensues due to abnormal handling response of the airplane, speedbrakes failing to deploy goes unnoticed (no call by PM) and this continues for an abnormally long period of time. The call "speedbrakes NOT deployed" at touchdown=>PF manually deploys them, landing roll continues as normal. No callout => No recognition => confusion.

Whenever something happens, it's not the operator that we should point a finger at. It's the system that's at fault. The operator is simply a product of the system. Don't blame the pilots. Blame the system and quickly fix the hole they fell thru, because if one falls thru it others surely will too.