Yeah, I've moved back and forward between multiple monitors and a single one, multiple times throughout my professional career, depending on what I'm doing. Game development usually makes me end up using at least two monitors, just programming frontend/backend usually works best with a single monitor (for whatever reason), producing music and video editor also works best with at least two monitors, but other creative things like writing works best with one, and so on.

At least personally, there is not a single setup that works for everything, I'm switching basically as often as I change what I work on.