I know this is probably a common topic. For me, I’m not sure if it’s a “trope” or just totally misinformed writing, but it’s how many authors approach alcoholism. Some examples are Girl on the Train and The House Across the Lake, among HUNDREDS. If anyone else here has struggled with alcoholism, you know it’s not just "i woke up after downing an entire bottle of whiskey but was able to shower, down a cup of coffee, and solve a murder. "
I think this may be related to writing stories. I dream in complex narratives that are generally very coherent and linear. Often with extravagant back stories/memories that give meaning to dream events. It is part of why I write. I suspect many other authors have a similar experience and assume it is relatable to all.