Just how unethical is the tiktok shop?

Bruh what did you expect? And if you dont fell good why not buy from somewhere else?

It depends on the seller. There are crafty people who make their own products at home, and there are businesses that may or may not be ethical depending on circumstances. If you're worried about it, you can probably poke around and research it a bit on an individual basis.

I've bought on there before, but it was someone with their own embroidery machine making patches.

So you're gonna make those kids sweat for no pay?