OK - i'm from the UK, living in the UK, so here's a British take on it:
The British government have financial schemes for parents, regardless of age of the parents. The parents will have more than enough money to care for their child, irrespective of whether or not they get financial support from their family.
For the government to select who gets financial support and who doesn't is a whole moral 'can of worms'. So, they have to give support to these kids.
This will make things easier for the kids, and may perhaps be one reason they weren't scared to pursue their sexuality in the first place. However, that is obviously speculative on my behalf.
The alternative i.e. being selective on who receives financial support would be, in my eyes, a far bigger moral dilemma than the issue talked about here.
Secondly - irrespective of whether or not the kids are mentally mature enough to deal with having a child (which, on present evidence, they apparently aren't), if they are physically capable of having a child, then, in the eyes of nature, they are ready to have kids, regardless of what the law states.
It must be remembered that rules on age of having sex etc are there to preserve society to exist in the present state of said society, as most societies would cease to exist if they didn't follow the rules of the society. However, with regards to legal age of having sex/having a kid, this, historically, wasn't always the case. It just happens that in the UK the legal age of consent is 16, as society seems to function well with this law in place.
I think we have to place the issue in context, and realise that it is an exception, rather than the rule. It is in no way indicative of a promiscuous society, nor of the 'falling state' of the society of the UK. It is too easy to react negatively against a whole country due to one incident.
I personally don't see the 'shock and outcry' this issue has caused. It just acts to show that physically/sexually, the body can be ready to procreate at a relatively young age, irrespective of whether the mind is ready to come to terms with the responsibility of the act undertaken.
In countries such as Colombia/Ecuador, even European countries such as Estonia, the legal age of sex is 14. So the case of topic here wouldn't really be such a big issue if it was presented in the context of these countries. By UK laws, the act is quite shocking, but by the laws of other countries, it isn't so bad. But I do realise this happened in the UK, and not in, for example, Estonia, so it has to be considered within the context of UK law.
But it should be remembered that what we consider 'morally correct' varies across society to society i.e. there is no absolute moral truth - only that which is decided by each society.