I’m sure these are good quality socks, it’s just the dye in them that’s the problem
I decided to handwashing these socks as a precaution and just as well because an excessive amount of dye came out, turning the water completely black. I decided to try to set the dye with a handful of salt in the first rinsing water, then rinsed them another 5 times after that until the water was clear. My concern would be for anyone throwing these in the washing machine and ruining a load of washing