He didn't say it was Britain's fault.
// “It is really an Anglo-Saxon phenomenon that’s beginning to slip in to the generation from the 15-24-year-olds.” //
This type of drinking (fast and to excess) is how the youth drink in the UK and Germany and the US. Young french people, if this French Minister is to be belueved, is saying it is creeping into french culture, probably through films and tv programmes.
He is not blaming us for the cultural change, he is just saying a change has occurred.