I agree that this is, broadly-speaking, bad, but it has also been going on for a long time. Before Amazon, WalMart was hocking cheaply made stuff and driving mom & pop shops out of business. The one positive here is that Temu/Shein are much more explicit about what they are. It's one thing to spend $5 on a pair of shoes made with child labor. It's entirely another to buy shoes made under similar conditions for $100 because of marketing/branding.
It gets easier every time some piece of shit arrives that's not as described, or is incredibly low quality - but it also gets drowned out by all of the "good enough" stuff that arrives as well.
I am all in for supporting local businesses, but your preposterous unsubstantiated claims like that shouldn't be brought up in decent society.
It's just like saying by supporting your local business in UK you are supporting the ridiculous sunak and their atrocious policies. It is not.
You can’t own land anywhere, “ownership” is rather a government own construction and related paper. If tomorrow government in any country decides they need your “owned” land, they will take it.