You aren't hungover if you never stop drinking - which is the point.

It's really, really prevalent in some industries. I've hired concrete finishers before (multiple times), and I've never NOT had a bunch of empty cans crushed up and hidden somewhere random on the worksite afterwords, even if it's only for a couple hours. When I worked with some writers years ago, they kept bottles of cheap scotch and 2 buck chuck in their desks, and had to replenish them regularly.

The go to drug selection in tech skews our perception a bit (weed being incredibly pervasive, but lsd,shrooms,stimulatns far from absent).