Can't watch the video, sounds horrific.
I saw a woman yesterday pushing a buggy at top speed through the park, over very rough bumpy surfaces. Toddler not strapped in, sitting right on the edge of the seat and leaning forward. My heart was in my mouth thinking of what would happen if she hit a tree root or something and the child catapulted out.
And yes I DO judge this, there is NO EXCUSE for it.