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.
Rip my favorite shirt? Leave it on the counter with a note and my wife will have it fixed by the end of the day ... Love my wife.
Maybe you mean people who do or used to do it professionally?
How many people do you know that could turn raw fabric into a dress? I have can do the simplest repairs and even used a sewing machine a few times but that’s not particularly useful to a garment factory.
Sewing/dressmaking is a lot like woodworking. Being able to visualize things well in 3D is an asset, but also having good tools helps as well.
It's fairly obvious that people think that these folks can be replaced by software, but they say the same thing about engineers.
Also, entire communities were built around textile mills and transportation/consolidation/intermodals. When we shut down the Garment District, and shipped all the work overseas (and my friend freely admits his company did the same), it destroyed these communities. Lot of skilled labor left, and stopped training the next generation.
And, to answer another question, I don't have to "prove" anything. I was simply telling something that I heard from an extremely relevant source. I'm sure as hell not going to ask my friend to "prove what he said," for the convenience of Internet randos.