Oddly enough, I do know how, both via school (home ec) and more importantly, due to older relatives who were into quilting. I have zero interest in ever doing it, but I absolutely do know far more than I ever wanted to about sewing.

I think you can find a few who still do such things in maker spaces, as well, but it only seems to be taken up by people who are already gainfully employed in things that make a lot more than low end manufacturing work.