I found the opposite effect from covid personally as a 'zillennial'. As soon as the lockdowns and 'rule of six' were over the first thing me and my friends did was rent a nice house in the middle of the Welsh countryside and have a massive multi-day party. We all felt that lockdowns had stolen what was left of our early 20s from us and wanted to make up for it!

I often wonder if there's a lot of national differences here, in the UK people for the most part wanted to reverse everything about the covid norms as quickly as possible after Partygate and all the political drama. People are still drinking less but it's because pints cost >£6 now in a lot of places, nothing to do with an outbreak of temperance.