That's a good point. I painted D&D miniatures in the day, but didn't think of it as "modeling". Perhaps because you are not assembling anything (or very little). I never got into Warhammer but have seen the displays, storefronts to know it's a big deal.
When I thought to design and 3D print a model, I was not sure people actually painted their prints — it seemed mostly about just the printing. I've seen enough 3D prints go full paint-job on YouTube by now though to know it's a thing.
I still feel like the 3D-print-plus-painting modeling is kind of a niche thing. At the very least it requires young people to have access to so me pretty expensive stuff.