For static pages, the "front-of-front-end" developer is broadly the "web designer" and does CSS most of the time. As JS sites get more complicated, those button

For static pages, the "front-of-front-end" developer is broadly the "web designer" and does CSS most of the time. As JS sites get more complicated, those buttons need behaviour which is generally also that person's job, so now they do JS. I'm a small operation, but I'll spend entire days on the "frontend" where I don't actually open a web browser. I'm writing the code that does all the client-side computation from the data it gets from an API. I definitely see the distinction in my own projects and as teams grown, specialization becomes more important. So I can definitely see the distinction.