I wonder how true this is. There's a lot of machine sewing, done by humans, to make more complicated articles of clothing (for example a dress, or a pair of trousers), and doubtless that won't be mechanised even though it could be because humans are cheaper to retrain. Your basic little black dress will be hand made, maybe by a person you know, maybe by near slave labour, but humans made that.
But say socks, the actual garment manufacture is entirely mechanical, thread goes in, machine works, socks come out. There are a bunch of human processes we add, including a QA step (the machine doesn't care if it makes occasional non-socks, a QA can see that's not a sock and dispose of it or summon maintenance if the machine starts to do this a lot) but so far as I can see the socks are made by the machine.
But say socks, the actual garment manufacture is entirely mechanical, thread goes in, machine works, socks come out. There are a bunch of human processes we add, including a QA step (the machine doesn't care if it makes occasional non-socks, a QA can see that's not a sock and dispose of it or summon maintenance if the machine starts to do this a lot) but so far as I can see the socks are made by the machine.