You may be right.Although I haven't read about any students drowning or getting lost in any caves.
Pretty sure if they were drinking heavily, I would have.
I don't think there is an allegation of them going into caves drunk. For the university it is a big enough risk if there is any drinking during club sanctioned outings. With #metoo it doesn't matter what the university did, if there is drinking and someone is embarrassed about their choices afterwards, there will be hell to pay.