I feel sorry for the guys...
If the girls truly did look 16, truly were ASKING for it with 100% consent, how many people can honestly say they'd ask for proof of age? If they didn't look quite 16 which is more likely, then the guys were probably irresponsible but still, if a girl who looks CLOSE/POSSIBLY 16 was asking for it with full consent, are you really expecting to end up in jail for it? I dislike how the news report likes to call it 'rape' every 10 words - yes, that's what it's classed as, but most readers will just see the word and assume the girls didn't consent, when they clearly did...
I think the parents are the most to blame