I myself used to drive many types of forklifts and deal with the same sort of shealving.
I would say right now, that if those shelves was correctly anchored to the floor, there is no way in hell that they should have collapsed in such a fashion like that, after getting what appears to be a small nudge from the payload on the front of the forklift and at minimal speed.
I myself have hit racking the odd few times and at a harder rate than this, and nothing has happened, so I would imagine Health And Safety would have a field day with this, and would ask about the condition of the racking, and how it was assembled and fixed to the floor.
Having an accident like this is no laughing matter at all, especially when you see 250,000 sq ft of warehouse (D82 main, Boots The Chemist HQ, Nottingham) go up in flames when someone mis-guides the forks into a stack of areosol's in a high rise rack.