Not at ALL cute. Dogs are not made to carry weight, even big dogs. They can pull a ton of weight safely, but it is very damaging for them to carry any significant weight (a small pack is fine, a child is not). It is not safe or "cute" for these dogs to be carrying such large weights!
I completely agree with this. You could maybe put a little baby on them, but a 4,5,6,7,8 yr old child is not good for them at all.
I think that video is horrible, especially the pictures that have a saddle and bridle on the dog!
Like get a horse for god's sake!