I don't really play D&D. I was researching crafting systems for, um, research purposes and I trying to see what level of detail the resource tree has, and if there is any creative liberty involved.

It looks complex. I see there are crafting specific classes like an Artificer. Is that class irrelevant for most D&D games or does anyone play D&D with the main intention of crafting? Does anyone do playthroughs that are craft heavy? How heavy?