"I dare say our children might look a bit older if in a camp for any length of time"
Hmmm---my understanding is that war, malnutrition and poverty tend to slow down growth and puberty. When I have travelled in developing countries in the past with many poor people, I have sometimes been a bit startled by the "12yo" who turns out to be 15 or 16, but not really the other way round.
Given that this is a small number of boys/young men who do, to be fair, have relatives here already, I suppose there is a reasonable case for their being allowed to come over.
But I do think that people are entitled to feel annoyed at being manipulated by misleading media images.
If the argument is "Well, young men are still vulnerable and they do have relatives in the UK," then the argument should have been framed in those terms right from the start, so that we could have an honest discussion; as it was, the newspaper articles were full of pictures of tiny tots. Stuff like this feeds people's sense of mistrust in the media.