I feel for the older children, whom the mums and dad are reliant upon. It was the adults choice to have more children, not the older kids. It isn't their child, so why should they be looking after the littler ones? I'd help out with my younger siblings, but I wouldn't parent them much like the single mum is making the older ones do whilst she is at the boyfriends, or giving birth. She should have made arrangements for one of the dads or the boyfriend to look after the children, rather than one of the children.
Both families seem childish, one example can be seen above, and with the mum and dad are smug, but when hell breaks loose they dont do much which shows a lack of control when things go out of control, and away from their "routine".
Can see the impact it has on the children, as one of them only want one child when she grows up, because she sees how messy they are, and what they are like when growing up. And the mum saying she tries to spend 10 mins a day with each child... I don't feel like that is enough interaction, if my mum only spent 10 mins a day with me, I'd be well upset.