There is a brand in my country that I liken to a physical Shein. The clothes are a similar style, and basically everything is polyester. When I walk into it, it smells like a carpet store.
Getting common goods less expensive is good, making them too cheap is not. Imagine you are optimizing a math model, but nothing actually has prices. You just get a garbage point as optimum. You need to have scarcity, so that a system that optimizes the allocation of scarce goods actually works.
i think its made people less independent than when we could maintain and produce our own textiles, and treat them well. Now we're dependent on markets and slave labour
So carbon emissions are bad, but then we should price carbon and not micromanage clothing inventory.