I'll preface my comments by stating that I am anti-dr-g and anti-drunk, but...
I know for a fact that a ton of folks have been starting happy hour at 10am. I can't speak for those using the Devil's Lettuce, because oddly enough people are a bit more forthcoming about drinking on the job vs. their use of dr-gs.
So want I want to know is have we been more productive or effective when no one is around to see what is in the coffee cup? Again, alcoholism is a serious disease, but we've moved so far away from a "Mad Men" alcohol in the office environment that ANY amount of alcohol is viewed as horrific. It's patently absurd. You can't tell me that 8oz of beer is somehow worse than the sugar drop experienced after eating a candy bar or high-carb lunch.
One of the projects I have been on during WFH had a Team's BYOB afterhours team-building meeting. It was optional, and non-official, but was attended by most of the team. It's amazing what happened to the Chevron silence after a single beer was had. I'd argue that we could improve our level of feedback and communication if we had more of these types of events.