We haven’t seen greater virus spread in domestic first class cabins, and we don’t see virus spread from business class cocktails. Tomato juice doesn’t carry a greater risk of virus transmission when you add vodka. Indeed screwdrivers are good sources of vitamin D, which appears to be highly protective against Covid-19.
While it’s possible to nurse a drink as an excuse not to wear a mask, someone looking not to wear one doesn’t need alcohol to do that.