It can be said that the conventional border between 'the place, time and person for drinking' and 'the place, time and person for no drinking' began to melt and coexist.
それまで峻別されていた「酒を飲む場・時・人」と「酒を飲まない場・時・人」が境界線を溶かされることで共存し始めたといってもよい。