When a bar serves minors they are fined and can lose their liquor license. Same thing here, you can’t shed liability by claiming the minors were breaking rules you weren’t even enforcing anyway.
You are right. Of course, according to this thread (not the article), the girl was an idiot brat, a whore, and her parents committed manslaughter (knowledge I wasn't privy to from just reading the article), so it seems they all deserved what they got.
Honestly, the longer I live, it seems some people come to conservatism as a reasoned response to the world; but some latch on to it because they mistakenly identify it as a philosophy akin to their own well established arrogance and deficiency of heart.
Very cogent observation. Those are the "every man for themselves" libertarians; they don't play well with others.